Fault Finding - Heatrae Sadia Supreme 150SS Fitting Instructions And User Manual

9.0 FAULT FINDING

Your Heatrae Sadia Supreme should give trouble-free operation. However
should a fault occur, the table below should allow most faults to be identified.
Fault finding should only be carried out by a competent person.
SYMPTOM POSSIBLE CAUSE
No indicator 1. If no water or heat - no
lights power to unit
2. If hot water available
- no power to indicator
diodes
Water flows 1. Solenoid valve fault
from vent and
primary cutout 2. Level sensor fault
operates 3. Electronic control fault
4. Low water pressure
S t e a m f r o m 1. Control thermistor fault
vent pipe and - open circuit
primary cutout 2. Electronic control fault
operates 3. Scale build up
D r i p s f r o m 1. Incorrect spring tension
outlet
2. Scale: Debris under
tap seal
3. Damaged tap seal
4 Scale on tap outlet spout
Water "runs 1. Scale on tap outlet spout
on" when tap 2. Scale debris under tap
released seal
3. Damaged tap seal
Stale taste to Unit left unused for several
water days
Ta p s t i c k s Dirt around handle pivot
open
12
ACTION
1. Check power supply is correctly
connected and switched on and the
primary cutout has not operated
2. Check connections to indicators at
4 way plug
1. Check operation of solenoid valve.
Replace if necessary
2. Check level system
3. Check connections to electronic
control. Replace if necessary
4. Increase inlet pressure
1. Check continuity (5Kohms at 100°C)
2. Check connections to electronic
control. Replace if necessary
3. Descale unit
1. Ensure tap headwork nut correctly
adjusted
2. Remove and clean as necessary
3. Replace tap seal
4. Clean tap outlet
1. Clean tap outlet
2. Replace and clean as necessary
3. Replace tap seal
Empty and allow to refill before use
Clean with a stiff paint brush