172-65702M-04 (SQ-C01) 10 Dec 2020
38
Problem
Cause
Diagnosis
Remedy
Temperature
does not rise
as required
Water
temperature is
unstable
The supply water
system valve is closed
or the designated
water amount is not
discharged
Check the supply
water system valve
Check the amount of
water used
Open the supply water
system valve.
The thermometer is
broken.
Check the temperature
with another
thermometer.
Replace with a new
thermometer if it is
judged to be defective.
Large fluctuations of
the amount of hot
water used.
Check hot water
usage
When a large amount
of hot water is
required, make sure to
gradually increase the
amount of hot water
used.
(There is a risk of
burns.)
Temperature
adjustment dial has
not been adjusted
Confirm the position of
the temperature
adjustment dial
Adjust the temperature
adjustment dial.
(Discharge water
amount and
temperature vary
depending on
operating conditions.)
Refer to the heating
capacity graph.)
