Wacker Neuson 5000620856, Руководство оператора, Страница: 65 / 144

ghi_tx001258gb_FM10.fm
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HI750 Operation
Entering the burner controller diagnostic mode
The burner controller includes a diagnostic mode/function through which causes of
malfunctions may be determined. The controller sends out a sequence of pulses
which are visible on the reset button/LED display.
To enter the diagnostic mode:
1. Wait at least 10 seconds after the controller has entered the lock-out mode.
2. Press the reset button for more than 3 seconds. Release the reset button when
the yellow LED flashes.
The burner controller will send out a sequence of pulses, one second on and one
second off. There is a 3-second interval between each sequence. The number of
pulses identifies the probable cause of a problem. See the chart below.
After the determining the cause of the malfunction, correct the issue.
Resetting the burner controller
To return the burner controller to the operation mode, reset the burner controller by
pressing and holding the reset button for 1–3 seconds. The burner will restart after
a 2-second pause.
Press reset
for
>
3s 3s Pulses Pulses
RED LED on
wait at least 10s
Interval
Lock-out
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Signal Probable Cause
2 pulses
The flame does not stabilze at the end of the safety time due to one of the
following:
– faulty ionization probe
– faulty or soiled gas valves
– neutral/phase exchange
– faulty ignition transformer
– poor burner regulation (insufficient gas)
3 pulses
Minimum air pressure switch does not close due to one of the following:
– make sure pressure switch trips to produce lockout
– air pressure switch faulty
– air pressure switch incorrectly regulated
– fan motor does not run
– maximum air pressure switch operating
4 pulses
Minimum air pressure switch does not open or light in the chamber before
firing due to one of the following:
– air pressure switch faulty
– air pressure switch incorrectly regulated
7 pulses
Loss of flame during operation due to one of the following:
– poor burner regulation (insufficient gas)
– faulty or soiled gas valves
– short circuit between ionization probe and earth
10 pulses
– Wiring error or internal fault
wc_gr008354