Dometic CK36H401RI Installation Manual page 16

Troubleshooting
Problem Cause
Not heating well The roof air conditioner is not set to
heating.
The ambient temperature is below
–2 °C.
The temperature set is lower than the
room temperature.
One of the temperature sensors is
defective.
The evaporator fan is damaged.
The condenser fan is damaged.
Low air output The air intake grilles are blocked or
obstructed.
The blower is defective.
Water enters the The condensation water drainage
vehicle openings are clogged up.
The seals are damaged.
Roof air condi- No supply voltage (240 Vw)
tioner does not connected.
switch on.
The voltage is too low
(under 200 Vw).
The voltage converter is defective.
One of the temperature sensors is
defective.
The electrical fuse of the power
supply is too low.
Roof air condi- One of the temperature sensors is
tioner does not defective.
switch off.
The electrical fuse of the power
supply is too low.
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Dometic Harrier Inverter
Remedy
➤ Set the roof air conditioner to
heating.
The roof air conditioner will only
heat at ambient temperatures
above –2 °C.
➤ Select a higher temperature.
➤ Contact an authorised service
agent or Dometic.
➤ Remove any leaves and other
dirt from the ventilation grilles
of the roof air conditioner.
➤ Contact an authorised service
agent or Dometic.
➤ Clean the drainage openings
for condensation water.
➤ Contact an authorised service
agent or Dometic.
➤ Check the power supply.
➤ Contact an authorised service
agent or Dometic.
➤ Check the electrical fuse of the
power supply.
➤ Contact an authorised service
agent or Dometic.
➤ Check the electrical fuse of the
power supply.
EN