ECO2 Systems SANCO2 GS4-45HPC Installation Manual page 28

E9 Water circulation pump error
E7 Fan motor locked
F3 Discharged temperature error
H0 High water outlet error
FA High pressure side error
H3 Pressure switch error
Note:
1. After a component is replaced or the inspection is completed, turn the breaker OFF for
a period of 3 minutes before restarting to confirm the error does not re-occur.
2. If the corrective actions above do not solve the error problem, a malfunction of the PCB
is highly likely.
Water Supply Quality (Supplemental)
Chloride and PH
In areas with a high concentration of chloride in the water, that water can cause
corrosion and subsequent failures. Where the chloride level exceeds 0.1 ounces per
gallons (200 mg/litre), the warranty is no longer valid on to the heat pump unit and tank
unit.
PH is a measure of whether the water is alkaline or acid. In an acidic water supply, the
- Check the water is full fill in the Tank.
- If the water circulation pump is not working,
replace the pump.
- Check the revolution of pump by controller.
If the revolution is low, replace the pump.
- Replace the main PCB
- Remove foreign objects around the fan motor.
- Check the fan motor connectors on the main
PCB.
- Replace the main PCB.
- Measure resistance of the discharged
thermistor.
- Replace the main PCB or heat pump.
- Check the water circuit is not flowing by air, dirt
or scaling.
- If the water circulation pump is not working,
replace the pump.
- Measure resistance of water outlet(outgoing)
thermistor.
- Replace the thermostat.
- Replace the main PCB.
- Check the heat pump piping for any blockage.
- Check for any piping bend, blockage or kink.
- Check if the pipes are frozen.
- Ensure mains water supply is available.
- Ensure all shut off valves are open.
- If the water circulation pump is not working,
replace the pump.
- In areas with hard water ensure Gas Cooler is
not scaled up, descale if necessary.
- Replace the main PCB or heat pump.
- Check the thermistor connectors on the main
PCB or control PCB in the heat pump unit for any
disconnect, fall-off, wire breakage or short circuit.
- Replace the main PCB.
SANCO Heat Pump – Installation Manual
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