Table of Contents
Advertisement
8 - TROUBLESHOOTING
Fault
Low pressure fault
Frost protection shutdown through primary
temperature sensor
Heating system is not hot; heat pump up to
buffer tank/low loss header is hot
Heat pump running; heating output is too
low
Heat pump runs continually and yields
only low temperature; traces of oil in the
appliance
To clarify the cause of the fault, please contact your heating installer/electrician. If the faults are definitely not the result of any of the
causes listed here, please contact our customer service.
CAUTION! Adjustments and troubleshooting may only be carried out by trained specialists!
Standard controller settings are made during commissioning by CARRIER specialists.
Subject to technical modifications!
This manual describes appliances that are not always standard items. There may therefore be differences to your specific heat pump.
System installer:
..............................
..............................
..............................
..............................
..............................
20
Possible cause
Air in source energy circuit
Not enough frost protection additive
Not enough water/brine
Line leaks
Filter dirty (water)
Submersible pump clogged
Submersible pump running in wrong direction
Geothermal store exhausted
(brine inlet temperature ≤ -4 °C)
Submersible pump faulty
Low pressure switch set too low
Refrigerant loss
Refrigerant circuit faulty
Source energy insufficient or too low
Energy transfer is interrupted or too low
Excessive heat demand
Source system overstretched
Building design specification not met (e.g.
thermal insulation)
Refrigerant leak
Threaded connections are loose; refrigerant line
leaks
Company name
......................................................................................................
Address
......................................................................................................
......................................................................................................
Tel.
......................................................................................................
Installer
......................................................................................................
Troubleshooting
Vent
Correct
Increase water/brine volume
Replace
Clean, backwash
Repair, clean
Correct rotational direction
Regenerate/enlarge geothermal store (interim
solution: significantly reduce heating mode;
activate auxiliary heater, e.g. electric immersion
heater)
Replace
Correct the setting
Notify customer service
Top up refrigerant
Notify customer service
Brazing, renew
-
Replace circulation pump,
vent heating circuit,
open gate valve, open control valves,
increase circulation pump output stages
Reduce heat load
Reduce heat load
Ensure building meets its design specification
Switch off heat pump,
notify customer service
Advertisement
Table of Contents
