22
Symptom Power
Light
Low
Flow
Light
Heater
Low/
Med/
High
Probable Cause
Possible Remedy
No change in
temperature
between Low/
Medium/High
setting.
ON
ON
ON
OFF
Any
Any
Insufficient mains
water pressure.
Possible failure
o f f l o w v a l v e ,
microswitch, or
heater tank.
Contact local water
company.
U s e a s u i t a b l e
continuity device to
check the continuity
of the microswitch
or heater tank and
replace parts as
necessary.
Water will not
turn off.
ON
ON
OFF
ON
Any
Any
Flow valve, solenoid,
or Start/Stop switch
faulty.
Supply pressure
b e l o w 2 0 k P a
(0.2 bar).
R e p l a c e a s
necessary.
Contact local water
company. Check
mains water static
pressure.
A p p l i a n c e
f a i l s t o
p r o d u c e
h o t w a t e r
w h e n s e t
on Medium/
High Heater
Setting.
ON
ON
ON
ON
OFF
OFF
Med/
High
Med/
High
Med/
High
Insufficient water
supply.
Possible failure of
the microswitch or
thermal switch.
Heater tank failure.
Contact local water
company.
U s e a s u i t a b l e
continuity device to
check the continuity
of the microswitch
or heater tank and
replace parts as
necessary.
Replace.