Troubleshooting guide

MAGNUM VERSION 8 MANUAL REVISION 3.1
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If there are more than 4 boiler stages addition screens will be displayed showing up to the maximum of 12 boiler
stages. The status of 4 boiler stages will be displayed per screen.
Pump States 7.75.5.
The general pump states are as follows:
 PUMPS STOPPED: The Run/Stop Switch is in the STOP (OFF) position.
 PUMPS ALL OFF: The Run/Stop Switch is in the RUN (ON) position but no pumps are required at this time.
Control temperature is high and no heating is required.
 PUMPS HOLDING: The Run/Stop Switch is in the RUN (ON) position at least one pump is on, no additional
pumps are needed. Pump flow is being maintained.
 PUMPS UNLOADING: The Run/Stop Switch is in the RUN (ON) position and a pump will be turned off.
 PUMPS LOADING: The Run/Stop Switch is in the RUN (ON) position additional pumps are needed.
 PUMPS MAX ON: The Run/Stop Switch is in the RUN (ON) position and the maximum number of pumps that
are available are on.
The individual pump states are as follows:
 PMP OFF: The pump is off and it is ready to be turned on if needed.
 PMP ON: The pump is on.
 PMP FLT: The pump is off due to the digital input, Starting Pump Fault, associated with this pump being on for
a time longer than the safety time in set point #161.
 PMP LOamp: The pump is off due to low amp draw.
 PMP HIamp: The pump is off due to high amp draw.
Boiler States 7.75.6.
The general boiler states are as follows:
 BOILER STOPPED: The Run/Stop Switch is in the STOP (OFF) position.
 BOILER HOLDING: The Run/Stop Switch is in the RUN (ON) position at least one boiler stage is on, no
additional boiler stage are needed. Control temperature is being maintained.
 BOILER UNLOADING: The Run/Stop Switch is in the RUN (ON) position and a boiler stage will be turned off
as the control temperature is too high.
 BOILER LOADING: The Run/Stop Switch is in the RUN (ON) position additional boiler stages are needed as
the control temperature is too low.
 BOILER MAX ON: The Run/Stop Switch is in the RUN (ON) position and the maximum number of boiler
stages that are available are on.
The individual boiler states are as follows:
 STP OFF: The boiler stage is off and it is ready to be turned on if needed.
 STP ON: The boiler stage is on.
 STP FLT: The boiler stage is off due to the digital input, Starting Boiler Fault, associated with this boiler stage
being on for a time longer than the safety time in set point #190.