The pump current has risen above the
pump full load current by the factor set
in the Engineers menu.
Test the operation of the pump by manually
operating the pump. See Quick guide section.
Overcurrent can indicate a worn/seized motor.
Service or replace the pump as required.
Check that the voltage supply to the unit is
within the specified limits.
Change the FLC if it is significantly different.
The pump current has sunk below the
pump full load current by the factor set
in the Engineers menu.
Test the operation of the pump by manually
operating the pump. See Quick guide section.
Undercurrent can indicate damaged motor
windings (open circuit) or an air locked pump.
Check the Pump fuse has not blown.
Check that the voltage supply to the unit is
within the specified limits.
Service or replace pump as required.
Change the FLC if it is significantly different.
The allowable pump run time in the past
hour has exceeded the [Flood Protection
Limit] value.
(an excessive amount of water has been
delivered in a short space of time).
Pump operation will be suspended until
history has been cleared and fault
acknowledged.
Excess water consumption can be caused by
very large leaks (Burst pipes, open drain valves,
etc.), work being done on the system (draining
of large parts of the system), or bleeding of
radiators. Investigate the cause before clearing
the fault. This value can be increased if required.
The number of pump starts in the past
month has exceeded the [Excessive
Consumption Limit].
(water is being delivered to the system
frequently) Pump operation will not be
affected.
Excessive number of pump starts can be caused
by small leaks on the system requiring frequent
top-up. Inspect the system for leaks.
This value can be increased if required.
To clear this fault simply press the down key and
acknowledge it by pressing OK
No signal is being received from the
system pressure transmitter(s).
Check the signal from the pressure transmitter
and replace if necessary.
(the pressure transmitter can be damaged by
excessive pressure, extreme temperatures,
water hammer and debris)
14.0 CIM Modules (Communication Protocols).
With the addtion of an accessory card the communication functionality of the PHT A unit can be
extended to include BACnet or Modbus communications.
The following “Read only” outputs are available.
Fault Outputs available:
Pump 1 Over Current Pump 2 Over Current
Pump 1 Under Current Pump 2 Under Current
Low Water Alarm High Water
Low Glycol Service Required
System 1 Low Pressure System 2 Low Pressure
System 1 High Pressure System 2 High Pressure
System 1 Flood Protection System 2 Flood Protection
System 1 Excessive Consumption System 2 Excessive Consumption
Data outputs available:
System 1 Pressure System 2 Pressure
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