40 SYSAER R32
Problem
Probable cause
Solution
Circuit stoppage
further to the
high pressure
thermostat
being activated.
Incorrect operation of the high pressure
pressostat.
Check the operation of the pressostat. Replace it if required.
Outlet valve partially closed.
Open the valve. Replace it if required.
Non-condensable particles in the circuit.
Bleed the circuit
Condenser fan(s) not operating.
Check the wiring and the motors. Repair and replace if
required.
Liquid line too
hot
Insufficient refrigerant fluid charge.
Locate and eliminate the causes of charge losses and top up
the refrigerant fluid charge.
Liquid line frozen
Liquid line valve partially closed.
Checking the opening of all the valves.
Clogged dehumidification filter.
Replace the filter cartridge.
Fans do not
operate.
Electrical circuit problems.
Check the connections.
Internal circuit thermal cut-out activated.
Contact an approved Service Centre.
Reduced output
in both Heating
and Cooling
mode
Compressor operating fault
Contact an approved Service Centre.
Dirt in the evaporator water circuit.
Chemical cleaning of the evaporator water circuit.
Condenser battery blocked.
Clean the condenser battery.
Insufficient refrigerant fluid charge.
Top up the refrigerant fluid charge.
Evaporator
heater is not
operating.
No power supply.
Check the main fuse and the auxiliary fuses.
Heater circuit open
Check the heater and replace if required.
No/ little control
over water
temperature.
Incorrect thermostat setting.
Check the temperature setting on the control panel.
Incorrect temperature differential between
evaporator inlet and outlet.
Check the water flow and the quantity of liquid in the water
circuit.
Electronic control system malfunction.
Contact an approved Service Centre.
Insufficient
water
circulation.
Air in the circuit
Bleed the air via the safety valve.
Deposits or impurities in the evaporator.
Wash out the evaporator by back-flushing.
Unit not
operating, no
alarm activation
Water circulation fault
Check the pump.
Flow controller inoperable.
Check the flow controller.
Differential pressostat inoperable.
Check the differential pressostat.
Summary of Contents for AC-RSR105R32HEC
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