Mira Alero Installation And User Manual page 23

Symptom Start/
Stop
Light
No change in
t e m p e r a t u r e
between I/II/III
ON
settings.
Water will not
turn off.
ON
Appliance fails
to produce hot
water when set
ON
on II/III heater
settings.
Heater Probable Cause
Setting
I / II / III
I n s u ff i c i e n t m a i n s w a t e r
pressure.
ANY
Possible failure of flow valve,
microswitch or heater tank.
Inlet valve, solenoid, or start/
stop switch faulty.
ANY
Supply pressure below 0.2 bar. Contact local water company.
Insufficient water supply
P o s s i b l e f a i l u r e o f t h e
II / III microswitch or thermal switch.
Heater Tank failure.
23
Possible Remedy
Contact local water company.
Check the continuity of the
microswitch or heater tank and
replace parts as necessary.
Replace as necessary.
Check mains water static
pressure.
Contact local water company.
Check the continuity of the
microswitch or heater tank and
replace parts as necessary.
Replace.