8 TROUBLESHOOTING AND DIAGNOSTICS
8.1 Expansion Alarms
The M.M. will display up to 16 expansion alarms. Please find to the expansion alarms bellow:
1 2
nd
Low Level
The water level has fallen below the commissioned 2
nd
Low
position. If the alarm was preceded by a 1
st
Low alarm, the 1
st
Low
entry will be automatically replaced within the alarm log.
2 Probe 1 Comms Fault
The communications between the water level control and probe 1
have failed, exceeding the maximum allowed period of 3
seconds. Check probe wiring/ failed probe.
3 Probe 2 Comms Fault
The communications between the water level control and probe 2
have failed, exceeding the maximum allowed period of 3
seconds. Check probe wiring/ failed probe.
4 Probe 1 Short
Probe 1 has short circuit failure. This probe’s water level is
currently outside of the normal operating limits range. This may be
caused by a probe hardware failure. Contact an Autoflame
technology centre.
5 Probe 2 Short
Probe 2 has short circuit failure. This probe’s water level is
currently outside of the normal operating limits range. This may be
caused by a probe hardware failure. Contact an Autoflame
technology centre.
6 Probe Mismatch
The probe levels are not currently in line with commissioned levels
suggesting a probe failure or alteration. This can also be caused
by overheating of the electronics. It is important to lag the flanges
if the probes are mounted directly into the boiler shell. Try
cleaning and re-commissioning the probes.
7 Probe 1 TC
Probe 1 has a temperature compensation failure. This probe’s
water level is currently outside of normal operating conditions
when compensating the water level. Check the wiring, clean the
probes, and re-commissioning the probes. This could be probe
hardware failure.
8 Probe 2 TC
Probe 2 has a temperature compensation failure. This probe’s
water level is currently outside of normal operating conditions
when compensating the water level. Check the wiring, clean the
probes, and re-commissioning the probes. This could be probe
hardware failure.
9 Permanent Reset
The water level control or M.M. mute/reset button was pressed
for longer than 10 seconds. To reset this alarm ensure that both
buttons are not pressed for at least 10 seconds. This will become
a keystuck-reset alarm.
10 Permanent Test
The water level control test input button was pressed for longer
than 60 seconds.
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