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Fault
yellow LED flashes 4 x
(After operating for a longer peri-
od of time, the heater switches to
failure)
yellow LED flashes 5 x
yellow LED flashes 7 x
yellow LED flashes 8 x
yellow LED flashes 9 x
(approx. 30 seconds after switch-
ing on the heater)
(After operating for a longer peri-
od of time, the heater switches to
failure)
Red LED flashes 1 - 8 times
Green LED flashes (with 5 Hz) after
the heater has been switched off
Room heating does not react to
adjustment immediately
After switching on the green and
the red LED illuminate
If these actions do not remedy the problem, please contact Truma Service.
Cause
– Summer mode with empty
water container
– Warm air outlets blocked
– Circulated air intake blocked
– Room temperature sensor or
cable defective
– Control panel or control panel
cable defective
– FrostControl heating element
has a short circuit
– Gas cylinder or quick-acting
valve in gas supply line closed
– Gas cylinder empty
– Gas pressure regulation system
iced up
– Butane content in the gas
cylinder too high
– Heater fault
– After-running is active to reduce
the temperature of the unit
– After-running is active to reduce
the temperature of the unit
– Faulty electronics
Rectification
– Switch unit off and allow to cool,
fill boiler with water
– Check individual outlet apertures
– Remove blockage from circulated air intake
– Please contact Truma Service
– Please contact Truma Service
– Disconnect heating element plug from electronic control unit,
replace heating element
– Check gas supply and open valves
– Replacing a gas cylinder
– Use regulator heater (EisEx)
– Use propane (butane is unsuitable for heating, particularly at tem-
peratures below 10 °C)
– Please contact Truma Service.
Determine flash code (short, long) if necessary: red LED on heater
electronics.
– No fault. After-run switches itself off after max. 5 minutes
– No fault. After-run switches itself off after max. 5 minutes
– Please contact Truma Service
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