28
34020-01385 · 00 · 07/2022
EN
Troubleshooting guide
Truma CP plus
Fault
code
Cause
Remedy
E 122 H
Lack of fuel due to low tank level, tank is empty and / or
vehicle is on a slope
•
Ensure 12 V power supply under load at appliance input / check for
AC voltage components (disconnect power supply unit and solar
system from on-board power supply)
•
Fill tank with fuel and then fill the fuel line (see operating instruc-
tions / initial start-up)
•
Make sure that the altitude kit is used for heating mode at altitudes
above 1500 m
•
If using the altitude kit, make sure that the correct metering pump
is selected
E 131 H
No connection between heater and control panel
Connect the heater and the control panel
E 132 H
FrostControl heating element has a short circuit
Ensure 12 V power supply under load at appliance input / check for
AC voltage components (disconnect power supply unit and solar sys-
tem from on-board power supply)
W 150 H
Warm air temperature exceeded
•
Make sure that all warm air ducts are connected to the heater
•
Check whether the warm air ducts are damaged or kinked
•
Remove the blockage in the circulated air intake and ensure that
the installation space is sufficiently ventilated (see operating in-
structions/circulated air intake)
W 151 H
Water temperature exceeded in heater mode
•
Switch heater off and allow to cool, fill water container with water
•
Make sure that all warm air ducts are connected to the heater
•
Check whether the warm air ducts are damaged or kinked
•
Remove the blockage in the circulated air intake and ensure that
the installation space is sufficiently ventilated (see operating in-
structions/circulated air intake)
E 152 H
Water temperature exceeded in hot water mode
Switch heater off and allow to cool, fill water container with water
W 160 H
W 161 H
12 V power supply faulty (low voltage)
•
Ensure 12 V power supply under load at appliance input / check for
AC voltage components (disconnect power supply unit and solar
system from on-board power supply)
•
Charge battery and check contacts, replace old battery
•
Short-term immediate action, switch off high-consumption ap-
pliances or start up vehicle engine until the heater starts running
(approx� 4 minutes)
