Taking Into Operation; Winter Operation; Switching Off - Truma Combi 4 E Instrucciones De Uso

Manual opening of the drain valve
Turn the rotary switch by 180° until it engages, whereby the
push button moves out (position w). The water in the boiler
drains out through the drainage muff (x).
The FrostControl drainage muff (x) must be free of contamina-
tion (slush, ice, leaves, etc.) at all times so the water can drain
out easily! No warranty given for frost damage!

Taking into operation

Heating is possible without restrictions with gas,
electrical and mixed operation, with or without
water.
Check to make sure the cowl is unobstructed. Be sure to
remove any covers that may be present.
Turn on gas cylinder and open quick-acting valve in the gas
supply line.
Check whether the power supply fuse protection on the camp
site is adequate for the 900 W (3.9 A) or 1800 W (7.8 A) that
have been selected using the power selector switch.
The cable drum must be fully unwound in order to prevent the
power cable from overheating.
Summer operation
(boiler operation only)
Select gas or electrical operation using the power selector
switch. Illumination of the yellow LED (g) on the power
selector switch indicates that the unit is operating with 230 V.
Mixed operation (gas and electrical) is not possible in
summer mode. With this setting the unit automatically
selects electrical operation with a preselected power setting of
900 W or 1800 W.
Move the rotary switch on the control panel to position (I –
summer operation) 40° C or 60° C. The green (k) and yellow
(p) LEDs light up.
When the selected water temperature is reached (40° C or
60° C) the heater shuts off and the yellow LED (p) goes off.

Winter operation

– Heating with water temperature monitoring
Select gas, electrical or mixed operation using the power
switch. Illumination of the yellow LED (g) on the power
selector switch indicates that the unit is operating with 230 V.
Move rotary switch on control panel to operating position (n).
Set the rotary switch (h) to the desired thermostat setting
(1 – 5). The green LED (k) for operation is lit and simultane-
ously indicates the position of the selected room tempera-
ture. The yellow LED (p) indicates the water's heat-up phase.
The device automatically selects the required power setting
in accordance with the temperature difference between the
temperature selected on the control panel and the current
room temperature. When the room temperature selected on
the control panel is reached, the heater switches back to the
smallest setting and heats the water to 60° C. Once the wa-
ter temperature is reached, the heater switches off and the
yellow LED (p) goes out.
The warm air fan can continue to run in order to cool the
unit (after-run).
– Heating without water temperature monitoring
Select gas, electrical or mixed operation using the power
switch. Illumination of the yellow LED (g) on the power
selector switch indicates that the unit is operating with 230 V.
Move rotary switch on control panel to operating position (m).
Turn the rotary switch (h) to the desired thermostat setting
(1 – 5). The green LED (k) for operation is lit and simultane-
ously indicates the position of the selected room tempera-
ture. The yellow LED (p – water's heat-up phase) will be lit
only when the water temperature is below 5° C!
The device automatically selects the required power setting
in accordance with the temperature difference between the
temperature selected on the control panel and the current
room temperature. Once the room temperature selected on
the control panel has been reached, the heater switches off.
The warm air fan continues to run at slow speed until the out-
going air temperature (on the unit) has fallen to 40° C or less.
If the boiler is filled, the water will automatically be heated
at the same time. The water temperature is then dependent
on the heating output being given off, and the duration of
heating required to reach the desired room temperature.
– Heating with drained water system
Select gas or electrical operation using the power selector
switch. Illumination of the yellow LED (g) on the power
selector switch indicates that the unit is operating with 230 V.
Move rotary switch on control panel to operating position (m).
Turn the rotary switch (h) to the desired thermostat setting
(1 – 5). The green LED (k) for operation is lit and simultane-
ously indicates the position of the selected room tempera-
ture. The yellow LED (p) will be lit only when the tempera-
ture of the unit is below 5° C!
Depending on the operating mode, the unit will automatical-
ly select the required power level according to the tempera-
ture difference between the setting on the control panel and
the current room temperature. Once the room temperature
selected on the control panel has been reached, the heater
switches off. The warm air fan continues to run at slow
speed until the outgoing air temperature (on the unit) has
fallen to 40° C or less.

Switching off

Switch off heater at control panel using rotary switch (position o).
The green LED (k) goes off.
If the green LED (k) blinks after switching off, then the
unit's after-running is active in order to reduce the unit's
temperature. This will end after a few minutes and the green
LED (k) will go off.
Always drain water contents if there is a risk of frost!
If the appliance is not to be used for a prolonged period, close
the quick-acting valve in the gas supply line and turn off the
gas cylinder.
Gas operation fault
If a fault occurs during gas operation the red LED (r) on the
control panel illuminates.
Please consult the Trouble-Shooting list for possible causes.
A reset (fault reset) is carried out by switching off, waiting
until all LED's on the control panel have stopped flashing, and
then switching the heater on again.
If a window to which a window switch has been fitted is
opened, the heater stops operating and the red LED (r)
flashes. The heater continues operating when the window is
closed.
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