Truma UltraRapid LPG, Руководство по эксплуатации, Страница: 6 / 12

6
Fuses
The water heater 12 V fuse is on the PCB on the water heater.
Important note
Only replace the miniature fuse on the PCB with a fuse of the
same type: 1.6 A (slow action).
1.6 A
Fig. 6
If there is a defect in the electronics, return the PCB well
padded. If you fail to pack it correctly, the warranty shall
no longer be valid.
Only use original Truma UltraRapid - PCB as spare parts!
Fault finding
Gas operation
Symptom Cause
When switching on, the heat-
er does not operate.
– No 12 V supply voltage.
Check the power supply (operation voltage min. 10.5 V).
Check the Truma UltraRapid fuse (refer to maintenance
“Fuses”).
When switching on, the heat-
er does not operate and the
red lamp lights up
after approx. 30 secs.
– Cowl cover fitted.
– Air in the gas supply.
– No gas supply.
– Incorrect gas pressure.
Remove cowl cover and / or clear any obstruction.
Check gas valves and gas cylinder.
To unlock (and purge air), switch off the appliance, wait
5 minutes, and switch on again.
Heater operates for a pro-
longed time and then
the red lamp lights up.
– Excess temperature
thermostat has responded.
Check water level, refill if required (close drain valve).
To unlock, switch off the appliance, wait 5 minutes, and
switch on again.
Electrical operation
Symptom Cause
When switching on, the
heater does not operate.
– No 240 V supply
voltage.
– Excess temperature
thermostat has responded.
Connect the caravan to the site supply and / or check residual
current circuit breaker.
The electrical heating element is fitted with an excess tem-
perature cut-out.
In the event of an impermissible dry run or overheating
of the water due to an error, the voltage supply will be in-
terrupted. In this case, a qualified service person must be
contacted.
DANGER
The operation of the thermal cut-out indicates a possi-
bly dangerous situation. Do not reset the thermal cut-out un-
til the water heater has been serviced by a qualified person.
Operating in gas mode is still possible.
Water supply
Symptom Cause
Water drips from the
P&T relief valve.
– Water pressure too high.
– Lime or dirt under the
P&T relief valve seat.
Check water pressure (max. 400 kPa), use a pressure reduc-
er when connected to central water supply.
Allow the appliance to cool and then slowly raise the test
lever (Fig. 2a – 4a) to flush the water system and attempt to
force dirt or foreign matter out of the P&T relief valve seat.
Replace P&T relief valve. This must be performed only by a
certified service technician.
When opening the cold
water tap, hot water
comes out.
– Hot water flows back
through the cold water
supply.
Fit a non-return valve in the cold water supply (refer to instal-
lation instructions “Water connection”).
If fault persists, please contact Service Australia.