Buderus Logamax Plus Gb142 User S Manual [Unlimited EBooks]
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Buderus Logamax Plus Gb142 User S Manual [Unlimited EBooks]
We have 6 Buderus Logamax plus GB142-30 manuals available for free PDF download: Servicing Instructions, Installation And Servicing Instructions, Installation Manual, Installation Instructions Manual, Instruction. WARNING! Improper installation, adjustmen t, alteration, service or maintenance can cause injury, loss of life or property damage. Re fer to this ma nual. For assistance or additio nal information consul t a qualified installe r, service agency or the g as supplier. Warning: If the inf ormation in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal in jury or death. Ask your question here. Provide a clear and comprehensive description of the issue and your question. The more detail you provide for your issue and question, the easier it will be for other Buderus Logamax plus GB142-24 owners to properly answer your question. Ask a question About the Buderus Logamax plus GB142-24 This manual comes under the category Central heating boilers and has been rated by 1 people with an average of a 6.1. This manual is available in the following languages: English. Do you have a question about the Buderus Logamax plus GB142-24 or do you need help. Ask your question here Buderus Logamax plus GB142-24 specifications Brand ManualSearcher.com ensures that you will find the manual you are looking for in no time. Our database contains more than 1 million PDF manuals from more than 10,000 brands. Every day we add the latest manuals so that you will always find the product you are looking for. It's very simple: just type the brand name and the type of product in the search bar and you can instantly view the manual of your choice online for free. ManualSearcher. com If you continue to use this site we will assume that you are happy with it. Read more Ok. Refer to this manual. BBpage 3421Check th Page 38 and 39: 7Diagnosispage 3647Check that the c Page 40 and 41: 7DiagnosisRepl.
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Thank you, for helping us keep this platform clean. The editors will have a look at it as soon as possible. Home Documents Buderus Logamax Manual - Logamax Manual Manual BUDERUS LOGAMAX U014 24K - User's Guide -.Manual LOGAMAX GB 112 - User's Guide LOGAMAX GB -Other results for: LOGAMAX GB 112. The file contains 36 page(s) and is free to view, download or print. Language: EN. buderus gb142 problems - HVAC-Talk: Heating, Air -Nov 28, 2008 I have a buderus gb142 boiler. Isearched online for the code and found it in a french version of the manual. Buderus Logamax Plus GB142 User Manual -Filetype:PDF. Buderus Regelung EMS plus und der Systembedieneinheit Logamax plus GB172i Logamax plus GB072 Logamax plus GB062. Warning: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal in jury or death. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share. Note that email addresses and full names are not considered private information. Please mention this; Therefore, avoid filling in personal details. The manual is 4,63 mb in size. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive. Check your email Please enter your email address. All manuals on ManualsCat.com can be viewed completely free of charge. By using the 'Select a language' button, you can choose the language of the manual you want to view. Perhaps the users of ManualsCat.com can help you answer your question. By filling in the form below, your question will appear below the manual of the Buderus Logamax plus GB142-15.
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Please make sure that you describe your difficulty with the Buderus Logamax plus GB142-15 as precisely as you can. The more precies your question is, the higher the chances of quickly receiving an answer from another user. You will automatically be sent an e-mail to inform you when someone has reacted to your question. For these purposes we created a catalog system, where all documents, that we have, are sorted by device name.The Buderus Boiler manuals are sorted by popularity among Guidessimo users (by the number of downloads and views on our website). Oil-Fired Boilers Type Download; User Manual: Download.The combi for warm, comfortable and happy homes: The Logamax. This manual must be retained for future use. User's Instructions.Beyaz Esya kategorisinde. Buderus Logamax.Air o swiss Altherma Buderus Daikin Dantherm McQuay Pioneer Viega Viessmann.You can use this tool to change your cookie preferences. Ok Privacy Policy. Improper installation, ad justment, alteration, service or main tenance can cause in jury, lo ss of li fe or property da mage. Refer to this manua l. For assistance or ad ditional information consult a qual ified instal ler, service ag ency or the g as supplier. Warning: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or dea th.Slight changes may be made to the illustrati ons, process steps and technical d ata as a result of our policy of continuou s improvement. Updating of documentation Please contact us if you have any suggestions for improveme nts or corrections. DANGER: Indicates the presence of haza rds that can cause severe personal injury, death or substan- tial property damage. WARNING: Indicates the presence of haza rds that can cause severe personal injury, death or substan- tial property damage. CAUTION: Indicates presence of hazards that can caus e minor personal inj ury or property damage. CAUTION: Risk of electric shock.
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Indicates presence of hazards due to electric shock. NOTICE: Indicates special instructions on instal lation, operation or main tenance that ar e important but not related to personal injury or property damage. This may damage the heat exch anger or affect i ts operation. 1.5 Tools, materials and additional equipment For the installation and mainten ance of the boiler you will need the standard tools for central heating, gas and water fitti ng. In addition, a handtruck with a fast ening belt is very useful. 1.6 Inspection We advise you to offer your customer an annual inspection and maintenance co ntract. If inspec tion reveals that maintenance work is necessary you can carry th is out as required in the Instal- lation instruction of the boiler. DANGER if flammable gas explodes. Beware if you smell gas: there may be an explosion hazard. Warning: If the informatio n in these instruc- tions is not followed exactly, a fire or explo- sion may result causing property da mage, personal injury or death. - Do not store or use gasoline or other flam- mable vapors and liqui ds in the vicinity of this or any other boiler. What to do if you smell gas - Do not try to light any boiler. - Do not touch any electrica l switch; do not use any phone in your building. - Immediately call your gas supplier from a neighbor’s phone. Follow the g as supplier’s instructions. - If you cannot reach your gas supplie r, call the fire department. Installation and servic e must be performed by a qualified installer, service agency or the gas supplier. Immediately repair defects to avoid damage to the heating system! Installation shall be in strict compliance with the manufacturer's instructions. A copy of the installation. 4) A metal or plastic identificatio n pla te shall be mounted at the exterior of the building, four feet directly above the location of vent terminal.Installation shall be in strict complia nce with the manufacturer's instructions.
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A copy of the installation instructions shall remain with the boi ler or equipment at the completion of the installatio n. See page 20. Operating code. See page 21. Activate flue gas test. Press the service button.The flue gas test is acti va ted as soon as a do t is visible in the lo wer right hand corn er of the display. This means that the boiler ru ns in heating mode at 100 % for 30 minutes. The maximum boiler water temper ature as set on the BC10 basic controller applies here. A. 2 7. Press the service button. Deactivate flue gas te st: Press and hold the chimney sweep button for more than 2 seconds, until the decimal point has disappeared.As soon as a non- flashing dot is shown in t he right-hand bottom co rner of the display, t he boiler will run in heating mode at 100 % load for 30 minutes. See page 20. Servic e mode acti vated. Current boiler load. See page 20. The boiler will reduce its load to 30 % within a couple of seconds. The maximum boi ler water temperature as set on the BC10 ba sic controller applies.Activate manual operation. As soon as a f lashing dot is sh own in the right - hand bottom cor ner of the di splay, manual operation is active. The means that the boiler is permanently in heatin g mode. The maximum boiler wa ter temper ature as set on t he BC10 basic controller now applies.Have at least 5 min.This parameter indicates the pump post purge time.Current heating system pressure. Operating code. The heating boiler is started. U 0 Is the air purging phase okay. Unit will show an error code. Fault must be fixed before proceeding. The blower runs for approx. 60 % of the maximum speed. The LED of the UBA 3 lights for 1 second. This means that the UBA 3 is reading the KIM. If a new KIM or UBA 3 has been installed, the LED will flash at a high frequency for max. 10 sec. while data is being exchanged. 9 P 2 psi The boiler is in ready mod e, there is no heat request. H 0 Start of pump post purge time via the heatin g system. See page 12 and page 20.
Factory default setting: 5 minutes. The primary circulation pump stops. The primary circulation pump is run fo r 10 seconds to prevent it from seizing up.The tank filling pump is activated. The hot surface ignitor is activated for seven seconds. The primary circulation pump is started. Ignition phase: The gas valve is opened. GB142 is in the hot water mode.Start the pump over-run time through the hot water tank at least 30 seconds, max. 1 minute, if there is a heat request. Air-side after-purging by blower for 30 seconds. The blower stops. The primary circulation pump stops. The tank filling pump is stopped.Start of pump post purge time via the heating system. The primary circulation pump stops.The hot surface ignitor is activated for seven seconds. The circulation pump is started up. Ignition phase: The gas valve is opened.Two display codes (see table 2 level 3 and level 4) are shown. After the first display code (level 3) is displayed, the second one (level 4) can be call ed up by pushing th e “Service e “ button. On the BC10 basic co ntroller level 4 can only be called up i n the event of a fault code. Under normal operating conditions it is only possible to call up level 4 using the RC control device or a service tool. A boiler reset is only necessary with a locking fault code (flashing) (see 8, fig. 2). The cause of the fault must be remedied first. The cause has to be remedied and the boiler resumes regula r operation. In the event of a locking boiler fault code both the display value and the disp lay code flash. If there are more than once display codes at the same time, the display codes will be shown in turn. And if one of these display codes is a locking disp lay code, the blocking display codes shown will also flash. If a new UBA 3 or a new KI M was fitted, this code will flash for max. 10 seconds. If this code conti nues to flash on the display, there is a fault in the communication between t he UBA 3 and the BC10 basic controller. See page 46.
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This fault code will also appear when connecting a thermostat to the RC terminals. BC The room temperature is too high. S tart the pump over-run time via the tank for at least 30 seconds and maximu m 1 minute. BC table 2 Display indication s on the BC10 b asic controller 1) only visible using the servi ce tool 2) is being carried out The time-proportional pro gram is activated. The time-proportional pro gram is activated as soon the l oad requested by the modulating room controll er is lower than the lower limit of the boiler load. During the time-propor tional program the burner is switched o n and off repeat edly. The period in which the burner is switched on depends on the diff erence between the load required by th e modulating room controlle r and the lower limit of the boiler load. As so on as the burner is swi tched on, the device is operating at minimum load. The time-proportional pro gram is deactivated auto matically as soon as the load required by the modulating room controller is high er than the lower l imit of the boiler load. Boiler is star ting up after a reset or a fter the main power is switched on. This display code will be displayed for 4 minutes maximum. BKS no Symptoms Diagnosis Remedy Display code Key to display code Type of display code Reset required. Other symptoms z Main display code z Sub- display code z table 2 Display indications on the BC10 basic controller 1) only visible using the service tool 2) is being carried out VKS yes No heating operation and no hot water. VKS yes No heating operation and no hot water. VK S yes No heating operation and no hot water. VKS yes No heating operation and no hot wate r. page 63 page 63 Symptoms Diagnosis Remedy Display code Key to display c ode Type of display code Reset required.
Other symptoms z Main display code z Sub- displa y code z table 2 Display indication s on the BC10 b asic controller 1) only visible using the servi ce tool 2) is being carried out VKS yes No heatin g operation and no hot water. VKS yes No heatin g operation and no hot water. This code is displayed for a maximum of 1 second. VKS yes No heatin g operation and no hot water.Other symptoms z Main display code z Sub- display code z table 2 Display indications on the BC10 basic controller 1) only visible using the service tool 2) is being carried out Check the sensor connection and the sensor wire. Sensor wire broken or shorted. Check the sensor installation. The sensor is defecti ve. Compare the resistance value to the sensor graph. Sensor connected or fitted incorrectly. Check the sensor connection and the sensor wire. Check the sensor installation on the hot water tank. AS The system constantly tries to heat the hot wat er tank to the hot water target value setting. The hot wate r priority is cancelled when the fault message appears. Permanent tapping or leak. Remedy the leak if relevant. Fill pump connected incorrectly or defecti ve. AS Thermal disinfection was interrupted. Tap flow rate t oo great during disinfec tion period. Choose the ti me for thermal disinfection so that no additional heat request occurs at this time. Boiler load to o low for simultaneous heat use b y other connected loads (e. g. 2nd heating circuit). Fill pump defecti ve Test the fill pump operation e. g. using a relay test. Symptoms Diagnosis Remedy Display code Key to display c ode Type of display code Reset required. Other symptoms z Main display code z Sub- displa y code z table 2 Display indication s on the BC10 b asic controller 1) only visible using the servi ce tool 2) is being carried out Reset by switching the heating system on and off. Inform the BUDERUS customer service department if necessary. AS The digital water pressure sensor is defective.
Replace the digita l water pressure sensor. AS BC10 settings are no longer taken over by RCxx devices. Contact problem at BC10 or BC10 is defective. Check the BC 10 connection. Replace the BC10 if necessary. VKS yes No heatin g operation and n o hot water. BKS no No hea ting operation and no hot water. UC 2) Symptoms Diagnosis Remedy Display code Key to display code Type of display code Reset required. Other symptoms z Main display code z Sub- display code z table 2 Display indications on the BC10 basic controller 1) only visible using the service tool 2) is being carried out LED Meaning Off Normal operation Flashing slowly (1 Hz) T here is a boiler fault (locking fault). Flashing fast (10 seconds) During startup after rep lacing the KIM or the UBA 3. On During a fault in the UBA 3 or if the KIM is not recognized.Heating mode Although the UBA 3 shows that the system is ready for operation and the room temp erature ha s not reached the preset value, th e Logamax plus GB142 do es not enter the heating mod e. Structure diagram for troubleshooting: page 44. Check that the operating switch is in position “1” (ON). See page 9. yes no Is the operating switch on the BC 10 in position “1” (ON). Turn the operating switch on the BC 10 to position “1” (ON). See page 9 (fig. 2). Is the 120V AC cord okay. Check that there is a 120V AC power supply at the mains power switch.Measure the resistance of the 120V AC supply cord. Check the fuse on the rear of the UBA 3 using a volt-ohm-multimeter. See page 84. Is the fuse okay? 44 page 83 Is there any indication on the BC10 display. Replace the fuse. See page 84. Deal with any proble m in the electrical system.Check that the mains power switch is ON. No yes Do the other functions of the device work normally? 19 page 29 Turn the operating switch on the BC10 to position “0” (OFF). See page 9, par. 4.2. See page 126. No No Is there a voltage? 19 page 28 Replace the BC10. See the fitting instructions of the BC10.
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Yes Replace the cable loom or the affected part thereof. No Yes Is the fuse okay. Is there any indication on the BC10 display. Connect the external primary circulation pump. 10 page 31 Turn the operating switch on the BC 10 to position “1” (ON). See page 9, par. 4.2. Turn the operating switch to “0” (OFF). Turn the operating switch on the BC10 to position “1” (ON). See page 9, par. 4.2. Replace the external primary circulation pump. Replace the fuse again. See page 84. 9 page 32 Check the fuse on the rear of the UBA 3 again using a volt-ohm-multimeter. See page 84. Yes page 28 Replace the blower. See page 88. Replace the fuse again. See page 84. Turn the operating switch on the BC10 to position “1” (ON). Turn the operating switch on the BC10 to position “0” (OFF). See page 9, par. 4.2. Turn the operating switch on the BC10 to position “1” (ON). See page 9, par. 4.2. Fit the casing. Make the heating system ready for operation.See page 84. Use a volt-ohm-multimeter to check the supply wires of the primary circulation pump, the blower and the hot surface ignitor for signs of short circuiting. See page 87 and page 93. 44 page 83 Replace the cable loom or the affected part thereof and the fuse again. See page 84. Use a volt-ohm-multimeter to measure contacts L and N of the transformer fo r resistance. Is the resistance approx. 50 Ohms? Measure the supply cord of the transformer to make sure it is not broken or shorted. Is the supply cord okay. Yes No No Yes Replace the transformer, see page 109. And replace the fuse again. See page 84. No No No Yes Check that the hot water outlet conduit immediately under the hot water tank becomes hot and that the settings on the RC device are correct. Open hot water tap. Are the settings okay. Check: - that the hot water supply has been registered with the control device. See page 8, fig 2. - that the hot water supply is not switched off b y the timer program of the RC control device.
See the Operating Instructions of the RC control device. Yes 8 page 31 Yes 13 page 34 The cause of the fault is to be found outsid e the device and the hot water tank. Yes No Are the water-side conduits connected properly. No Yes Connect the conduits correctly. Close the shut-off valve in the cold-water inlet and open a hot water tap at random to see if water comes out of it. Is this the case? Yes No The cause is then a defective mixer tap, a thermostat-controlled mixer valve or a short circuit between the hot- and cold-water conduit circuits. Place the affected components out of service. Check to see if any other external part of the heating circuit is a possible cause. 44 page 83 8 page 31 See page 89. Replace the hot water temperature sensor. See page 91. Is the wire okay? Check the wire of the hot water temperature sensor between the terminal strip and the UBA 3 mounting base using a continuity checking device. See page 92. No Yes 44 page 83 Replace the cable loom or the affected part thereof. 8 page 31 13 page 33 Does the burner in the boiler activate. Check that the burner in the boiler activates as specified in the structural diagram, page 17. No Yes Remedy the fault using the structure diagram that corresponds with the fault code. Yes 15 page 39 Is a tank filling pump fitted. No 21 page 36 8 page 31 Is the tank filling pump running. Check that the tank filling pump is running. No Yes 44 page 83 Is the tank filling pump being activated. Check the connection board to make sure that there is 120V AC on both contacts L and N of connection PS (gray) during hot water mode. Check the fuse on the connection board. Value: 5A. See page 84. Is the fuse on the connection board okay. Yes No Yes Yes No No Yes Replace the supply cord of the tank-filling pump. Replace the fuse on the connection board. See page 84. Replace the cable loom. 8 page 31 46 page 37 45 page 37 Is the tank filling pump running. No Yes Is the cable loom okay. Replace the circuit board.
Yes The external hot water tank is furred up. Decalcify the tank. No 8 page 31 Check that the pump impeller wheel o f the tank filling pump is not blocked. Is the pump impeller wheel of the tank filling pump blocked. Yes 46 page 36 page 36 8 page 31 47 page 37 Is the tank-filling pump soiled or is the pump impeller wheel defective. As described for the primary circulation pump, the tank filling pump must be turned in the direction of rotation of the pump using a screwdriver. No Is the capacitor of the tank filling pump okay? Yes Yes Yes Is there corrosion or scale inside the primary circulation pump. Clean the primary circulation pump (inside). Check the primary circulation pump for corrosion or scale.Yes No Check to see if any other external part of the heating circuit is a possible cause of the fault. 44 page 83 Check the hot water tank for scale build-up. Decalcify the tank. Are such items detected. See page 108. No Yes Yes No Increase the temperature setting on the RC control device. Check that the RC control device settings are correct. Check that the boiler water temperature setting on the BC10 (see page 9) or the RC control device is high enough. Yes No Are the RC control device settings correct. Increase the boiler water temperature setting on the BC10 (see page 9) or on the RC control device. Increase the boiler load setting. Check that the boiler load setting is correct. Is the boiler load setting high enough. No Check the control device. See page 104. Yes Is the boiler water temperature set- ting high enough? 8 page 31 Yes 44 page 83 Is a hot water tank connected? 44 page 83 No Yes Is a tank pump fitted? 20 page 42 No Is there a voltage? Is the DHW circulation pump running. Check that the DHW circulation pump is running, as described for the primary circulation pump. No Yes 44 page 83 Is there a voltage. Check the connection bo ard to make sure that there is 120V AC on both contacts L and N of connection PS (green) during heatin g mode.
Yes No Yes No Yes Replace the cable loom. No Replace the connection board. Is the DHW circulation pump running. No Yes 8 page 31 Replace the supply cord of the tank-filling pump. 49 page 43 48 page 43 As described for the primary circulation pump, the DHW circulation pump must be turned in the direction of rotation of the pump using a screwdriver. Is the pump impeller wheel blocked. Yes 50 No 8 page 31 Check the DHW circulation pump for so iling or for a defective pump impeller wheel. Is the DHW circulation pump soiled or is the pump impeller wheel defective. Yes Clean or replace or the DHW circulation pump. page 43 Is the capacitor of the DHW circulation pump ok ay. Yes No Replace the capacitor. 8 page 31 See page 126, fig 110. Yes No Is the wiring okay. Replace the cable loom or the affected part thereof. Replace the pressure sensor to test whether the fault can be traced back to the sensor. See page 116, paragraph 8.1.33. Check that the cable plug from the pressure sensor is connected. See page 8, fig. 1, pos. 17. Can a pressure indication be read out on the display. No No digital system water pressure indication on the display of the BC10 basic controller. Certain trouble-shooting activities have to be carried out in the heating mode of th e Logamax plus GB142. Locking boil er-fault co de - (dash) Operating c ode -A WARNING. Danger to life due to electric shock. - Switch off the Logamax plus GB142 when testing the connections. NOTE! Resetting is not possible b y switching off the operating switch. Other display code. 44 Locking boiler-fault code. Locking boiler-fault code. 0 Y 276 0 Y 277 0 Y 28 5 Wait approx. 60 seconds until the boiler automatically becomes operational again.Are all servicing cocks open. Is the system pressure (measured on the boiler) in the heating system at least 14.5 psi (1 bar)? Are the supply and safety sensors okay. Is at least one thermostatic valve open. Is the primary circulation pump okay.Fill and bleed the heating system.
Open a thermostatic valve. Replace the primary circulation pump. No No No No No No 44 Check the primary circulation pump. 8 page 31 No 44 Is the blocking boiler-fault code cleared from the display. No 8 page 31 The UBA 3 does not register any connectio ns to the unused contacts 78 and 50. L ocking boiler-fault code. 1L 21 1 Check the contact between the UBA 3 and the UBA 3 mounting base. See page 125, fig 109. Is the contact okay. Has the malfunction been repaired. Yes Yes Restore the contact between the UBA 3 and the UBA 3 mounting base. No No page 83 44 Try to remedy the fault by replacing the entire cable loom. 8 page 31 The system pressure is too low. Locking boiler-fault code. 2E 20 7 Are all servicing cocks open. Is the system pressure (measured on the bo iler) in the heating system at least 14.5 psi (1 bar)? Are the supply and safety sensors okay. Locking boiler-fault co de. 2F 26 0 2F 271 L 2 Yes Yes No No Check the primary circulation pump for mechanical jamming. Check the primary circulation pump activation. Try to undo the jam or replace the pr imary circulation pump. Is the activation okay.Replace the primary circulation pump. Replace the supply cord. Yes Yes No No 8 page 31 The primary circulation pump does not generate a pressure difference. Locking boiler-fault code. L 2 66 2 Check the primary circulation pump for soiling. Is the expansion tank correctly connected to the supply conduit. Yes Check whether the pressure sensor is soiled. See page 116. Is the pressure sensor soiled.See page 116. Clean the pressure sensor. Yes No Connect the expansion tank to the retur n conduit. Yes No No 8 page 31 Has the malfunction been repaired? Check the primary circulation pump. Is the primary circulation pump okay. Yes Yes Yes Yes Yes Open the servicing cocks. No No No No No Is the pressure in the heating system (measured on the boiler) at least 14.5 psi (1 bar)? Yes Fill and bleed the heating system. No Open a thermostatic valve.
Is at least one thermostatic valve open.Operating code 2U 21 3 Are the supply and return sensors okay. Check the primary circulation pump. Replace the supply and return sensors (page 91). No No No No No Is at least one thermostatic valve open.The air fan has failed during the operating phase. Are the plug-and-socket connections fitted correctly. Tacho wire okay? Has the malfunction been repaired. Yes Yes Yes Yes Reconnect the plug-and- socket connection of the blower. See page 88, fig 12. No No No No Is the activation okay.See page 88. Replac e the ta cho wi re (pag e 88). Check that the mains voltage is 120V AC. Yes No Sufficient mains voltage. Have the electrical syst em tested. Check whether you can remedy th e fault by temporarily fitting a new blower. See page 88, paragraph 8.1.6. 8 page 31 Check the supply cord of the blower (120V AC). See page 87. Replace the supply cord.Is the blower still operational. Yes No 8 page 31 8 page 31 See page 86. Are the plug-and-socket connections fitted correctly. Tacho wire okay? Attempt to rectify the fault by tem porarily replacing the blower. See page 88. Has the malfunction been repaired. No No No No Is the activation okay.See page 88. Replace the tacho wire. See page 88. The blower is switched off during the safety test. Locking boiler-fault code. L 3 14 2 8 page 31 See page 87. Replace the supply cord. 8 page 31 Check to see if the blower is soiled or wet. Is the blower dry and clean. Yes Yes Yes Clean or replace the blower.
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