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Trouble Shooting
TROUBLESHOOTING - BURNER
BURNER WILL NOT START
1 Check that the external wiring is correct.
2. Check the 230v supply on terminal 10 and 11 at control
box base, this will also determine if the thermostats are
calling for heat. (See Fig. 33).
3. Press reset button to ensure that the control box has not
gone to lockout.
4. Check filter is clean on fan inlet.
5. If burner still refuses to start, change control box.
BURNER STARTS, FLAME NOT ESTABLISHED,
CONTROL BOX GOES TO LOCKOUT AFTER END OF
SAFETY
1. Check gas supply to valves is turned on.
2. Check ignition is present after end of pre-purge period.
3. Check electrodes.
4. Check earth continuity.
5. Check ignition lead and flame lead are fitted correctly
and soundly.
BURNER STARTS FLAME ESTABLISHED, CONTROL
BOX GOES TO LOCKOUT
1. Check polarity of wiring for Live and Neutral to control
box base, live to terminal 10 , Neutral onto terminal 11
at control box base.
2. Check flame detection probe is correctly positioned.
Ensure that the probe insulation is free from cracks or
moisture.
Check that the probe is not in contact with other metallic
parts of the burner.
3. Check the burner is effectively grounded and bonded to
the incoming ground wire from the main supply.
4. Check for interference to the flame signal from the
ignition spark. This can be determined with a d.c micro-
ammeter (
μ
A). Connect the meter between the terminal
and the incoming wire to the flame probe. Correct
polarity of the meter connections must be correctly
observed with the positive side of the meter connected
onto terminal at the control box. If flame is established
and the meter tends to move in a reverse direction, this
can be an indication that the ignition is causing
interference to the flame signal. It may also be an
indication that there is insufficient earth contact with the
flame. A correct reading should be approximately 3 - 7
μ
A.
5. Change control box if necessary.
FIG. 33
DESN 512344
48
Содержание Classic HL-CKNG
Страница 14: ...Installation Instructions FIG 7 14 TERMINAL STRIP CONNECTIONS ...
Страница 17: ...Users Guide 17 ...
Страница 37: ...Electrical Controls CONTROL CIRCUIT EXTERNAL TERMINAL STRIP CONNECTIONS 37 ...
Страница 45: ...Fault Finding WIRING DIAGRAM BURNER ONLY FIG 31 45 ...
Страница 49: ...Trouble Shooting 49 ...
Страница 51: ...51 ...