Specifications

Summer Operation
(Supplying Hot Water Only)
• Select gas or electrical operation with the
power selector switch. The yellow LED will
illuminate on the switch to indicate the unit
is operating on 230V.
• Move the rotary switch on the control panel
to position ‘L’ (summer operation) 40˚ or 60˚
and the yellow LED (P) should illuminate.
• When the selected water temperature is
reached the heater will shut down and the
LED (P) will go out.
Winter Operation
(Supplying Blown Air Heating With Hot Water)
• Select gas, electrical or mixed operation using
the power switch. The yellow LED (G) on the
power selector switch will illuminate to
indicate 230V operation.
• Move rotary switch on control panel to
position ‘N’.
• Set the rotary switch (H) to the desired
thermostat setting (1-5) The green LED (K)
will illuminate to show the unit is operating.
• The yellow LED (P) will indicate the waters
heat up phase. When the room temperature
selected on the control panel is reached,
the heater will switch back to its lowest
output and will heat the water to 60˚.
• Once the water temperature is reached the
heater will switch off and the yellow LED (P)
will go out.
Supplying Blown Air Heating Without Hot Water
• Select gas, electrical or mixed operation using
the power selector switch. The yellow LED (G)
will illuminate to indicate 230V operation.
• Move the rotary switch on the control panel to
position (M).
• Set the rotary switch (H) to the desired thermostat
setting (1-5) The green LED (K) will illuminate to
show the unit is operating.
• The yellow LED (P) will only illuminate if the water
temperature is below 5˚C. When the room
temperature selected on the control panel
is reached, the heater will switch off.
• The warm air fan will continue to operate at slow
speed until the temperature has reached 40˚.
• If the boiler is filled then it will be automatically
heated but the water temperature is totally
dependant on the heat output of the heating
output being given off, and the duration of the
time taken to reach the desired room temperature.
Switching OFF
Switch off the heater at control panel using rotary
switch (position O). The green LED (K) will go out.
Please note that the if the green LED (K) blinks
after switching off then the unit is ‘after running’
to reduce the units temperature.
This will stop after a few minutes and the green
LED (K) will go out.
Filling The Unit With Water
• Ensure that the cold water drain tap is closed
(lever should be in horizontal position –
see draining the water system).
• Turn on the hot tap in either the bathroom
or kitchen (if your vehicle is fitted with a mixer
tap please set this to the ‘HOT’ position).
• Switch ‘ON’ the water pump on the control panel
over the doorway.
• Leave the tap open to let air escape from the
water system while the tank is filling. The heater
is full when water flows out of the tap.
For more detailed information on operating the
Combi Boilers please refer to the Truma appliance
instructions that can be found in your blue
information wallet supplied with your vehicle.
30 www.auto-trail.co.uk
Truma Combi 4E / 6E
: Owner’s Handbook
2090 AT Cheyenne-Frontier Owners Handbook REPRO 2:Layout 1 18/11/08 14:40 Page 30