Instructions condensing Air heaters type XR version XR-GB-4001-a
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Setting screw
Burner pressure
low
Setting nut hexagon
burner pressure
high
High/low
coil
Burner
pressure
Inlet
pressure
Always check the CO production of the
heater!!! Too much CO usually means the
mixture is too rich. Adjust this if necessary
with the two adjusters (see above)
The TR125 and TR150 are provided with two
gas control valves. The adjustment of the
high and low burner pressure setting is in
principle equal like the above described
adjustment of the burner pressures. The
burner pressures for high and low should be
measured and set at each gas control valve
itself. After the adjustment of the burner
pressure the burner pressure should be
checked on each gas control valve.
The TR150 heater is provided with two
Honeywell Gas control valves. TR150
Never forget to check the CO (carbon monoxide ) production of the heater!!! Too much CO
means mostly that the mixture is too rich. CO value should always be below 100 ppm.
8 Problem solving
8.1 General
When it turns out that the problem is not caused by the external circumstances (i.e. no electric
supply power or no gas), please take the following instructions into account. Please remember
the built in waiting times of the heater (do not react too soon!) and the signals of the LEDs and
the code on the display on the electronic circuit board.
Volatile lock out Can only be reset by hand
L-0 Internal
Internal error 13
L-1 Ignition
error
After ignition only 5 seconds flame 1
No flame 2
L-2
Internal
Internal error 13
L-4 E- error longer than 24hr 12
L-5
Burner fan Burner fan does not work. 6
L-6
L-7
Burner fan Burner fan rotates at the wrong speed. 7
L- 8, 9,
10, 11,
Internal
error
Internal error 13
L-13 Pressure
Pressure switch is closed in stand by 14
L-14 Pressure
Pressure switch does not close at pre-purge 11
L-15 Overheat Sensor heat exchanger is overheated 3
L-17, 18,
Internal
Internal error 13
L-20 Flame error Flame detected after closing gas valve 15
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