Webasto BlueCool Classic

Questions and Answers

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Lauren ArnoldSep 12, 2025
What does 'Fan standby' mean on a Webasto Air Conditioner?
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  Joseph ZimmermanSep 12, 2025
  Fan standby indicates that blower operation from the TECC card or cabin controller is impossible because the discharge temperature is higher than the set point on cooling or lower on heating. To resolve this, run the compressor/unit for a certain time to reach the required discharge temperature. The blower fan will start, and the blinking error code bA11 will disappear automatically.
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maxwell96Sep 13, 2025
Why is the temperature reading inaccurate on my Webasto Air Conditioner?
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  Angela RogersSep 13, 2025
  Inaccurate temperature readings for room/ambient temperature, water temperature (premium), or evaporator temperature (classic) can occur if the temperature sensor is not installed in the correct position, if there is interference from the environment, or if there is a read-out deviation. Check for interference from direct sunlight or heat radiation from components near the sensor. Calibrate the sensor or replace the defective sensor.
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icordovaSep 15, 2025
Why are the pumps running continuously on my Webasto system?
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  Bryan LewisSep 15, 2025
  When additional relays are used to operate pumps, a small leaking current from the printboard may operate the relay continuously. To resolve this, remove R56 + C24 and/or R57 + C27 from the printboard.
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William RichardsSep 16, 2025
Why do the seawater pumps run immediately after powering up my Webasto controller?
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  Dr. Terry Hayes MDSep 17, 2025
  If the seawater pump(s) run directly after powering up the controller, it could be because the wiring for pump 1 (seawater) is mixed up with the wiring for pump 2 (chilled water). Check the wiring to ensure it is correct.
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Melissa LindseyNov 22, 2025
What to do if Webasto Air Conditioner compressor 1 has a high-pressure cut-out?
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  whitneyjonesNov 23, 2025
  A high-pressure cut-out in compressor 1 could be due to a defective pressure sensor or an open/short circuit. Check the sensor and wiring, and replace the sensor on the Schrader valve if needed. In cooling mode, it might be caused by insufficient seawater cooling or a defective circulation pump, or a blocked seawater strainer that is not primed, so check the discharge water volume (V= 8 l/min, or > 30,000 BTU V= 18 l/min) and clean the strainer and bleed the seawater circuit. In heating mode, it could be due to insufficient evaporator water flow (Premium) or air flow (Classic), or an air lock in the chilled water circuit (Premium) or a broken circulation pump, so check the water or air flow, ensuring a ?T evaporator in/out minimum of 4K, and bleed the chilled water system or check the pump...