Truma UltraRapid, Operating Instructions Manual, Page: 6 / 16

6
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 HWS 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.
Check water level, refill if required (close drain valve).
The electrical heating element is fitted with an excess tem-
perature cut-out. In the event of a fault, switch off at the
control panel, wait 10 minutes, then switch on again.
Water supply
Symptom Cause
Water drips from the
P&T safety valve. – Water pressure to high.
– Lime or dirt under the
P&T safety 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 safety valve seat.
Replace P&T safety 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 the nearest Dometic Service.
Technical data
Protection type / protection class
IP21 / class I
Water capacity
14 litres
Rated water pressure
400 kPa
Maximum working water pressure / P&T safety valve setting
500 kPa – 99 °C – 10 kW
Type of gas
LPG (Propane)
Test point pressure
2.75 kPa
Nominal heat input
5.0 MJ/h (H
S
)
Nominal heat output
1.2 kW
Gas consumption
96 g/h
Injector size
0.70 mm
Heating up time from approx. 20 °C up to approx. 65 °C
(14 litres)
Gas operation: approx. 45 min.
Electrical operation: approx. 40 min.
Gas and electrical operation: approx. 28 min.
Power consumption 12 V
Ignition: 0.160 A
Heating up: 0.12 A
Stand-by: 0.05 A
Power consumption 230 V ~ / 240 V ~
Heating up: 5.7 A / 5.9 A, 1300 W / 1415 W
Weight (empty) 14 litres
BGA: 7.7 kg
BGA with peripheral devices: 8.6 kg
BGEA: 8.1 kg
BGEA with peripheral devices: 9.1 kg
Water pressure reducer
Flow range water: 0 – 10 litres/min.
Maximum inlet pressure:
700 kPa
Maximum outlet pressure: 200 kPa
The right to make technical modifications is reserved!
Dimensions
cut out
245
129
324
168
47
30
109
24
255
18
Fig. 7
water
connections
gas connection
with test point electronic
cowl
cut out
PTR Valve
connection
360
347
92
383
174
Minimum 120
Fig. 8
(All dimensions in mm)