Troubleshooting for heater Thermo Top Z/C / E
Heater operates, however heat output too low

Option/
Additional Information
Possible cause Remedy
  Vehicle heating system or fan incorrectly adjusted Prior to putting the heater into operation, set the vehicle heating system to 'warm' and fan to speed setting 1 or higher
  Cooling system not completely bled Bleed cooling system in accordance with manufacturer's directions
  Incorrect integration into cooling system Integrate heater into flow pipe of vehicle's heat exchanger
Vehicle fan cannot be switched on Webasto fan relay defective Check operation of relay.
Check switching signal at relay pin 86
Vehicle fan cannot be switched on Defective 25 A fuse in Webasto fuse holder Replace fuse
Vehicle fan cannot be switched on Incorrect integration of Webasto fan relay in vehicle Correctly integrate Webasto fan relay

back