3.Determine and solve malfunction by below table:
20
Malfunction
Reason
Solution
Unit does
not work
1.Power failure
2.Loose power wire connection
3.Fuse of controller burn-out
1.Turn off power and inspect power supply
2.Identify the cause and rectify
3.Identify the cause and replace with new fuse
The pump is
operating, but
water isn't
circulatory or the
noise of pump is
too loud
1.Shortage of water or air in the water system
2.Water pump damage
3.Water supply valve not fully open
4.Water filter is blocked
1.Check water supply equipment and replenish water
remove the air of the water system
2.Change anther pump.
3.Open the valve of the water system
4.Clean the water filter and the pump
Unit heating
capacity is low or
compressor
working too long
1.Shortage of refrigerant or leakage
2.Poor thermal insulation of water system
3.Poor air flow into the air heat exchanger
4.Shortage of water flow
1.Check the system for leakage, fix leak and re-gas
2.Improve thermal insulation of the system pipeline
3.Clean the fin coil with water and improve air flow
4.Check the line strainer on the water inlet and clean it
Compressor
discharge pressure
too high
1. Water pump is not working
2. There is air in the water system
3. Excessive refrigerant (from repair / re-gas)
4.Heat exchanger not working properly
1. Check / fix power supply to the water pump
2. Open hot water taps, run water until all air expelled
3. Call refrigeration mechanic to reduce refrigerant
4. Call Siddons Service Centre
Compressor
suction pressure
too low
1.Shortage of refrigerant or leakage
2.Filter or capillary blocked
3.Poor condenser heat dissipation
1.Call refrigeration mechanic to check the system for
leakage, fix the leak and re-gas the heat pump
2.Replace capillary tube or filter
3.Clean the heat exchanger.
Compressor will
not turn on
1.Power failure
2.Compressor contactor malfunctions
3.Loose connection
4.Overload protection of compressor activates
5.Incorrect setting of the return water
temperature in the water tank
6.Compressor capacitor malfunctions
1.Check the power supply and restore
2.Replace the contactor
3.Check for loose wires and re-connect
4.Check that the current / Amp draw of compressor is
within specification, may require replacement of the
compressor
5.Reset the return water temperature
6.Replace the capacitor
Loud compressor
noise
1.Liquid refrigerant enters the compressor
2.Compressor breaks down
1.Check the cause for flooding of the compresspr and solve
the problem
2.Replace the compressor
Blower is out of
operation
1.The relay or capacitor of the blower breaks down
2.The Blower motor seizes or burns out
1.Replace the blower relay or capacitance
2.Replace the blower motor
The compressor
is in operation
but the unit
does not heat
1.The refrigerant has leaked out
2.Compressor breaks down
1.Check the system for refrigerant leakage and
tell tale signs of oil, repair leak and re-gas
2. Check the reason and replace the compressor
Summary of Contents for SunPump MACHRW010W
Page 1: ...DC INVERTER AIR TO WATER HEAT PUMP INSTALLATION INSTRUCTION MANUAL Sun Sun tm Pump Pump ...
Page 2: ......
Page 30: ......
Page 31: ......
