11
11
SYMPTOM
POSSIBLE CAUSE
ACTION
Unit does
not heat on
commissioning
1. If “ON” indicator not illuminated -
no power to unit
2. If “READY” light flashing - water
supply not turned on
3. Solenoid fault
4. Low water pressure
5. Element fault
1. Check power supply is correctly
connected and switched on and that
the primary cutout has not operated
2. Check water supply
3. Check operation of solenoid valve,
replace if necessary
4. Check supply
5. Check element continuity. If faulty
replace
Water flows
from vent and
primary cutout
operates
1. Solenoid valve fault
2. Level sensor fault
3. Electronic control fault
4. Low water pressure
1. Check operation of solenoid valve.
Replace if necessary
2. Check level system earth
connections
3. Check connections to electronic
control. Replace if necessary
4. Increase inlet pressure
Steam from
vent pipe and
primary cutout
operates
1. Control thermistor fault - open
circuit
2. Electronic control fault
3. Scale build up
1. Check continuity (5Kohms at 100
°
C)
2. Check connections to electronic
control. Replace if necessary
3. Descale unit
Drips from
outlet
1. Incorrect spring tension
2. Scale: debris under tap seal
3. Damaged tap seal
4 Scale on tap outlet spout
1. Ensure tap headwork nut correctly
adjusted
2. Remove and clean as necessary
3. Replace tap seal
4. Clean tap outlet
Water “runs
on” when tap
released
1. Scale on tap outlet spout
2. Scale debris under tap seal
3. Damaged tap seal
1. Clean tap outlet
2. Replace and clean as necessary
3. Replace tap seal
Stale taste to
water
Unit left unused for several days
Empty and allow to refill before use
Tap sticks
open
Dirt around handle pivot
Clean with a stiff paint brush
Water
consistently
cooler than
when new
1. Control thermistor pocket has a
covering of scale
2. Control thermistor out of
calibration
3. Steam thermistor out of
calibration
1. Descale the pocket surface & unit
2. Check values (5Kohms at 100
°
C,
100Kohms at 25
°
C)
3. Check values (5Kohms at 100
°
C,
100Kohms at 25
°
C)
For any faults that cannot be identified using the Fault Finding chart please
contact Heatstore where shown on the back page.