Winterwarm XR+ Series, Installation Manual

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21 INSTRUCTION MANUAL AIR HEATER TYPE XR+
9.3 Warnings
The table below describes the temporary warnings that
can occur. The heater may still be working, or stops until
the cause has been resolved.
Display Error type Description Case #
A-02 Configuration
error Heater configuration error 19
A-07 Overheating Heat exchange sensor is
almost overheated 3
A-08 Overheating Flue sensor is almost
overheated 3
9.4 Instructions
After identifying the problem, use the Case number to find
the possible cause in this paragraph.
Case 1: Flame lasts only 5 seconds after ignition.
• The flame is not detected:
–
Check the ignition/ionisation cable and the
electrode. The cable should have a resistance
of 1 kΩ.
• The air heater is not earthed properly.
• The circuit board is defective.
Case 2: No flame after ignition.
• There is not enough gas pressure.
• The gas mixture is too poor:
–
Adjust the gas valve (see §8.1).
• The gas valve does not open:
–
During ignition, check for a 230 V voltage on
the valve.
• Check if the ignition electrode sparks. If not:
–
Check the cable and electrode and replace
them when damaged.
–
Check the burner control unit and replace it
when it does not give a spark output.
Case 3: Heat exchange sensor or flue sensor is overheated.
• Check if the connectors J12 and J6 are plugged in
correctly and if the connection J12[1-4] (optional
overheating protection) is closed.
• Check if the system fan supplies enough air.
• Check the settings of the gas valve. The heater may
be overfired. If so:
–
Adjust the burner pressure.
Case 4: Heat exchange sensor or flue sensor not detected,
or short circuit.
NOTICE L-25 refers to the heat exchange sensor. L-26
refers to the flue sensor, if applicable.
• The heat exchange sensor consists of two internal
sensors. The readings of these sensors may differ
too much:
–
Measure the resistance of each sensor. The
resistance should be 20 KΩ at 25 °C and 25
KΩ at 20 °C.
–
If the measured values differ too much,
replace the sensor.
Case 5: Too many flame failures while burning.
• The gas supply is not constant. This results in a
drop in gas supply pressure while burning and
causes the flame to extinguish.
–
Check the gas supply pressure while the
heater is burning.
• The burner pressure for Low fire is too low. This
causes the flame to extinguish because it is too
small to be detected.
–
Check the burner pressure at Low fire and
adjust if necessary (see §8.1).
• Recirculation of flue gas. Due to a problem with the
flue terminal the flue gas is sucked back into the air
inlet. This results into a lack of oxygen and causes
the flame to stop.
–
Check the flue system and fresh air supply.
Only certified, original parts should be used.
Case 6 : Burner fan does not work.
• Check if the burner fan is blocked.
• Check if the wiring is damaged.
• The burner fan is defective.
Case 7: Burner fan rotates at the wrong speed.
• Check if the burner fan runs smoothly.
• Check if the wiring is damaged.
Case 9: Too many reset actions in a short timespan.
• This error will disappear after some time or if the
main power is disconnected for a while.
Case 11: Insufficient air passage through the heat
exchanger. Pressure switch does not close.
• Check if the combustion fan is running.
• Check if the flue system is blocked or restricted.
• Check the pressure switch and the connections.
• Check the heat exchanger for flue leakage.
Case 12: E-error for more than 24 hours.
• Switch the air heater off and on and check the error
code.