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Cont ...
12 TROUBLE SHOOTING GUIDE
Symptoms
Error Code
Probable Cause
Recommended Action
No Power
Blank screen
No power to unit
Check power supply / fuse.
Internal re-settable
fuse tripped
Remove mains power from the unit for 20 seconds, re-apply the power.
Pump(s) not
starting
No power to unit
Ensure the green light is on the front of the unit, check fuse.
Low water
Low water in tank
Depress float valve to varify water is filling tank, check water level and
supply.
System pressure =
set pressure
Unit functioning correctly. Check the set system pressure.
Pump run fail
Pump seized
Force the pumps to run using the pump test function. Clear error.
Pump run fail
System pressure set
too high
System set pressure is set higher than the pump performance
capability, reduce set pressure. Ensure you have purchased the correct
unit for the system pressure required.
Sensor error
Pressure sensor fault
Remove pressure from the unit outlet and verify the displayed
pressure is 0 bar. Error will be displayed if the sensor signal is outside
parameters. (Replace sensor – call Calpeda Ltd).
Pump(s) will not
stop
Sensor error
System pressure set
too high
System set pressure is set higher than the pump performance
capability, reduce set pressure. Ensure you have purchased the correct
unit for the system pressure required.
Pressure sensor fault
Remove pressure from the unit outlet and verify the displayed
pressure is 0 bar. Error will be displayed if the sensor signal is outside
parameters. (Replace sensor – call Calpeda Ltd).
Low pressure
alarm triggered
Low pressure
Leak in system.
Check system for leaks. Check pump activity in logs. Check for leaking
pressure relief valve.
Low pressure alarm
set too high.
Reduce Low press alarm pressure. Check system pressure range
during normal operation.
Sensor error
Pressure sensor fault
Remove pressure from the unit outlet and verify the displayed
pressure is 0 bar. Error will be displayed if the sensor signal is outside
parameters. (Replace sensor – call Calpeda Ltd).
High pressure
alarm triggered
High pressure
System pressure
too high
Check system operation. Increase High presure alarm set pressure.
Sensor error
Pressure sensor fault
Remove pressure from the unit outlet and verify the displayed
pressure is 0 bar. Error will be displayed if the sensor signal is outside
parameters. (Replace sensor – call Calpeda Ltd).
Pump run time
alarm activated.
Pump running for
longer than set
time
Pump run time
alarm
Pump filling system
Activate system fill option to suppress alarm for 24 hours.
Leak in system
Check system for leakage. Monitor using system fill volume log, reset
if needed.
Increase pump run time limit.
Activity high alarm
activated. Pump
starting more than
set value
Activity High
alarm
Pump filling system
Activate system fill option to suppress alarm for 24 hours.
Leak in system
Check system for leakage. Monitor using system fill volume log, reset
if needed.
Activity High alarm
number too low
Increase the Activity High alarm value.
Sensor failure error
Sensor error
Pressure sensor
outside specifcation
Remove pressure from the unit outlet and varify the displayed
pressure is 0 bar. Error will be displayed if the sensor signal is outside
parameters. (Replace sensor – call Calpeda Ltd).
Low water error
Low water
Loss of water supply
to unit
Depress float valve to verify water is filling tank and check water level
and supply.
Water level set
too low
Adjust water level by turning float, ensure upper level probe is in
contact with water when the fill valve is turned off.
Check water level prior to leaving unattended.
Water overflowing
warning pipe or
weir
Water level too high
Check function of the fill valve, replace or adjust if needed.
Pump NRV leaking
Isolate the unit from system and mains water and replace non-return
valve and holder.
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