17
Troubleshooting
Problem
Potential cause
Resolution
No hot water at
the tap
Gas supply is turned off or interrupted.
Check and/or turn on gas supply.
Gas tank is empty.
Refill/replace the gas tank.
The appliance is switched off.
Switch on the appliance according to instructions
(refer to “Operating procedures” on Page 9).
Fresh water supply is turned off.
Open the fresh water supply.
Power supply to the appliance is switched off.
Switch on power supply to the appliance.
Defect in the appliance.
LED 2 flashes red (refer to “APPENDIX A – Error
Codes” on Page 27) and contact a certified ser-
vice technician if necessary.
Boiling noises
Too much lime scale in the appliance.
The appliance must be decalcified (refer to “Decal-
cification” on Page 14).
Hot water temper-
ature too low.
Gas flow to the appliance is too low (gas inlet pres-
sure < 2.62 kPa.
Consult vehicle documentation to determine
if gas supply is capable of providing the
necessary volume of gas for the appliance.
Contact a service technician to verify
a suitable gas installation.
Volume flow of hot water is too high and/or the
temperature of cold water reaching the appliance
is too low.
Turn down hot water at the tap or in the shower in
order to reduce volume flow.
Potentially retrofit a volume flow throttle into the
water system. This must be performed only by a
certified service technician.
Too much lime scale in the appliance.
The appliance must be decalcified (refer to “Decal-
cification” on Page 14).
Water escaping
at pressure relief
valve.
Water pressure in water system too high.
Adjust the water pump pressure to a maximum of
450 kPa.
If the water system is connected to a central water
supply higher than 450 kPa (4.5 bar) (rural or urban
connection), a water pressure reducer must be used.
Install a water pressure reducer (e.g. Truma water
pressure regulator) at the fresh water supply.
Water cannot expand in the water system.
Contact the vehicle manufacturer about retrofitting
a pressure compensation element.
Lime or dirt under the pressure relief valve seat.
Allow the appliance to cool and then slowly raise
the test lever (Fig. 3 – 4a) to flush the water system
and attempt to force dirt or foreign matter out of
the pressure relief valve seat.
Replace pressure relief valve. This must be per-
formed only by a Truma certified service technician.
Water escaping
at the water inlet
filter
Lime or dirt under the O-ring seats.
Clean the O-rings and their corresponding sealing
surfaces with clean water.
The yellow LED 3
is off although an
operating mode
was selected.
Power switch is OFF.
Switch ON the appliance at the POWER switch.
Power supply to the appliance is switched off.
Switch on power supply to the appliance.
The power supply was interrupted.
Reset by switching OFF at the control panel,
waiting 2 seconds and then switching on again.
If fault persists, please contact the nearest Service Australia.
