Operating instructions

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the red LED (R) on the control panel ashes with 5 Hz.
Possible causes can be found in the troubleshooting list.
! If the 230 V power supply is interrupted for just a brief
period of approximately 1 second during operation, the
heater will subsequently resume as normal.
Mixed Mode
Malfunction in the power supply 230 V
The yellow LED (G) on the power selector switch goes
off and the red LED (R) on the control panel ashes with
5 Hz.
If in mixed mode the 230 V power supply is interrupted
the heater automatically switches to gas mode. As soon
as the 230 V power supply is available again the heater
automatically returns to the mixed mode.
Possible causes can be found in the troubleshooting list.
Fault in the combustion process.
The yellow LED (G) on the power selector switch shines
and the red LED (R) on the control panel also shines.
If the ame goes out in mixed mode (e.g. empty
gas cylinder or closed exhaust outlet), the heater
automatically switches to electrical mode. If the heater
runs in mixed mode again, the cause for the fault needs
to be remedied and the control panel needs to be
switched off and on again.
Possible causes can be found in the troubleshooting list.
Maintenance
Only original Truma parts may be used for maintenance
and repair work!
The device must be de-scaled on a regular basis (at least
twice a year).
We recommend the Truma system care set for cleaning,
disinfecting and looking after the boiler. Other products
– in particular products containing chlorine – are
unsuitable.
The effectiveness of the use of chemicals to combat
micro-organisms in the unit can be increased by heating
the water in the boiler to 70 degrees C at regular
intervals.
Move power selector switch to gas operation (D) to do
this.
Move the rotary switch on the control panel to position
(I – summer operation) 60 degrees C. The green (K) and
yellow (P) LED’s light up.
Once the water in the boiler has reached
temperature of 60 degrees C, the burner will
switch off and the yellow LED (P) will go out. The unit
must stay switched on for at least 30 minutes and no
warm water may be removed. The residual heat in the
heat exchanger will heat the water up to 70 degrees C.
Fuses 12 V
The fuse is in the electronics beneath the connection
cover.
Replace the unit’s fuse only with an identical fuse.
Device fuse 10 A – slow – (T 10 A)
Fuse 230 V
The fuse and the power supply lines must only be
replaced by an expert
The unit must be disconnected from the mains (all poles)
before opening the electronic housing lid.
The fuse is in the power electronics (16) beneath the
electronic housing lid.
This ne fuse must always be replaced with a fuse of the
same type: 10 A, slow, interrupting capacity H.
!