Troubleshooting
Check All Wiring, Particularly Any Connections. Gently Pull On Wire Connections To The Pod And Heat Pump To Make Sure They Are Tight.
Check That The Water Is On, All Valves Are Open, And There Are No Leaks
The SANCO2 Heat Pump Does Not Turn On
- Check that the heat pump is powered on (red dot blinking on display)
- Check that all isolation valves are open
- Throughly purge the heat pump from all three purge valves (cold line, hot line, and circulator pump valve underneath the unit)
- Ensure there is no debris obstructing flow
- Ensure there is no spring check valve on the SANCO2
- Check all wiring connections are good at the heat pump and pod
SANCO2 Control Panel Displays H7
This indicates a wiring error with the tank temperature sensor
- Check all of the temperature sensor connections
- Ensure all IDC’s are completely crimped and the heads are flush with the casing
- Check for any cuts or defects in the cat5 cable between the pod and the SANCO2
- Check wiring connections of terminals 1 & 2 in the SANCO2 heat pump signal box
Tank Temperature Sensor Reading Above 120°F After Heat Pump Has Completed A Full Charge (Heat Pump Has Stopped):
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Ensure the tank temperature sensor is fully inserted into the back of the thermowell, and use a plug of insulating material to reduce thermal losses and prevent tension on the wire from pulling the sensor.
Chemical Smell In Water
From SANCO2 GS4 Installation Manual: