Troubleshooting Guide For Air Conditioning System (A) - Truma CP Plus Mode D'emploi

Fault Cause
code
E 170 H Risk of low voltage < 11.5 V
W 255 H Heater has no 12 V power supply
No connection between heater and control panel
If these measures do not remedy the malfunction or if fault codes are displayed that you cannot find in the trouble-
shooting guide, contact Truma Service.

Troubleshooting guide for air conditioning system (A)

Fault Cause
code
IR receiver unplugged or cable broken
E 8 A
W 8 A
Voltage drop at 230 V
E 17 A
W 17 A
If these measures do not remedy the malfunction or if fault codes are displayed that you cannot find in the trouble-
shooting guide, contact Truma Service.
power supply
Remedy
Use the electrical power from the battery sparingly, e.g. restrict
lighting
Charge battery
Ensure that the 12 V power supply is available
Make connection between heater and control panel
Remedy
Check the connection of the IR receiver
Check 230 V power supply
EN 39