Instructions condensing Air heaters type XR version XR-GB-4001-a
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Case 4:
Temperature sensor on heat exchanger error.
•
The sensor has internally 2 sensors. These differ too much. Measure the resistance
from each sensor, the resistance should be 20K at 25° en 25K at 20°. If the measured
values differ too much, replace sensor.
•
L-25 is heat exchanger sensor, L-26 is flue sensor
Case 5
: Too many flame failures while burning
•
The setting of the gas valve is not ok, adjust the gas valve
•
The flue outlet is blocked
Case 6
: The premix does not run
•
Premix fan is Blocked or the wiring is bad
•
Premix fan is defective
Case 7
: The pre-mix fan runs, but not the correct speed.
•
Check if the fan runs smoothly.
•
Check the wiring.
Case 9
: Reset button error
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Too many switches on reset button in a short period of time. These error will disappear
after some time, or if the main power is disconnected for a while.
Case 10
: Safety relay error
•
Plug J2 is not connected well, the bridge on connector J2 between 1 and 4 is not
connected well.
•
Otherwise change print board.
Case 11
: Insufficient air transport over the heat exchanger
•
Check the pressure switch and the connections
•
Check the heat exchanger for flue leakage
Case 12
: E-fault is 24 hours present.
•
An E fault should disappear after a while. When this error is present longer than 24 hr,
something is wrong. Check the error code after a new power up.
Case 13
: Internal error.
•
Power up the heater again, else replace the print board.
Case 14
: Pressure switch closed during stand by.
•
When the heater is in standby, the pressure switch should be in the rest position. When
it is in the closed position the contact could be stick, or water could be in the small
hose.
•
Replace the switch or dry the hose.
Case 15
: Flame detected after closing of the gas valve.
•
The gas valve closes too slow, replace the gas valve
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The ionisation electrode is wet. Dry or clean the electrode. Or change the electrode.
Case 16
: Flame detected before opening the gas valve.
•
Check it there is really a flame before ignition, if that is the case, replace the gas valve
•
The ionisation electrode is wet. Dry or clean the electrode. Or change the electrode.
Case 17
: Gas pressure switch open.
•
Check if the gas supply valve is open
•
Check the standing gas pressure.
•
Check while running the appliance that the gas pressure is sufficient.
Heater does start, but shows other problems:
Heater ignites explosively, has often flame failures:
•
Check the right setting of the gas control, the right CO
2
setting is important for the
correct ignition.
•
Check the ignition cable (1kOhm )
•
Check the setting of the ignition electrode, the spark has to be formed between the
electrodes and not between the electrode and the burner.
Insufficient output
•
The heat output of the heater will be insufficient if there is too much resistance in the
inlet- or outlet flue system. In this case the premix-burner-fan will be on full speed, but
