Heatrae Sadia SUPREME 150SS, Fitting Instructions And User Manual

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11
9.0 FAULT FINDING
SAFETY NOTE: DISCONNECT THE ELECTRICAL SUPPLY
BEFORE REMOVING THE COVERS AND CARRYING OUT ANY OF
THE FOLLOWING ACTIONS. DO NOT BYPASS ANY SAFETY
CONTROLS.
SYMPTOM POSSIBLE CAUSE ACTION
No indicator lights 1. If no water or heat – no power to
unit 1. Check power supply is correctly
connected and switched on and that
primary cutout has not operated
2. If hot water available – no power
to indicator diodes 2. Check connections to indicators at
4 way plug
Unit does not fill on commissioning 1. If “ON” indicator not illuminated –
no power to unit 1. Check power supply is correctly
connected and switched on and that
primary cutout has not operated
2. If “READY” light flashing – water
supply not turned on 2. Check water supply
3. Solenoid fault 3. Check operation of solenoid valve,
replace if necessary
4. Low water pressure 4. Check supply
Unit does not heat on commissioning 1. If “ON” indicator not illuminated –
no power to unit
1. Check power supply is correctly
connected and switched on and that
primary cutout has not operated
2. If “READY” light flashing – water
supply not turned on 2. Check water supply
3. Solenoid fault 3. Check operation of solenoid valve,
replace if necessary
4. Low water pressure 4. Check supply
5. Element fault 5. Check element continuity. If faulty
replace
Unit does not fill after commissioning 1. Level sensor fault 1. Check level system earth
connections
2. Solenoid valve fault 2. Check operation of solenoid valve,
replace if necessary
3. Electronic control fault 3. Check connections to electronic
control. Replace if necessary
4. Low water pressure 4. Check supply
Unit does not heat after
commissioning 1. Element fault 1. Check element continuity. If faulty
replace
2. Electronic control fault 2. Check connections to electronic
control. Replace if necessary
3. Control thermistor fault – short
circuit 3. Check continuity (5Kohms at
100°C , 100Kohms at 25°C)