49
When the boiler is not operated and numbers flicker on the liquid crystal display of temperature controller,
check the following matters. (Check the left two digits among four digits displayed on the liquid crystal display.)
Matters to be confirmed before reporting of failure
• Turn the boiler off and turn it on again.
• If the same symptom recurs, contact our service center for service.
• Turn off with heating or hot water power button and restart.
• If the same symptom recurs, contact our service center
for service.
• Turn off with heating or hot water power button and restart.
• If the same symptom recurs, contact our service center for service.
• Defrost using electrical heating devices like hot wire and
replace the damaged parts.
• When water leaks because of damage in internal parts,
contact our service center for service.
• Immediately call the technical support service of Rinnai.
• Immediately call the technical support service of Rinnai.
• Turn off with heating or hot water power button and restart.
• If the same symptom recurs, contact our service center for service.
•
Check whether water supply valve is open.
Remove and reconnect the power cord to repeat the trial run.
Abnormal fan
control Blocked
exhaust hole
Abnormal ratio arm
(gas governor)
control
Abnormal frost
prevention
thermistor
Abnormal trial
run on hot water
Abnormal
magnet valve
Internal fault of the
PCB
Abnomal flame
detected
Complete frost
detected
Exhaust closure
Abnormal
fan rotation
36
52
61
64
70
72
89
90
96
99
•
Turn heating off and turn it on again.
• First apply for service by contacting our service center and
switch heating method to floor heating.
Abnormal indoor
temperature
thermistor
35
Heating
Heating
• Immediately call the technical support service of Rinnai.
Malfunction of
thermistor return CH
37
Heating
• Check the pressure gauge on the front panel and follow the
instructions at the start of the filling operation chapter.
Insufficient hydraulic
circuit pressure CH
43
• Check whether gas valve is completely open.
• Turn off heating and hot water and then turn on again.
• If the same symptom is repeated, contact the gas supplier.
Abnormal gas
pressure
47
Heating,
hot water
• Check that the condensate drainage system is not blocked.
Condensate drain
blocked
(filled siphon)
45
Heating,
hot water
Heating,
hot water
Heating,
hot water
Heating,
hot water
Heating,
hot water
Heating,
hot water
Heating,
hot water
Heating,
hot water
• Turn off with heating or hot water power button and restart.
• If the same symptom recurs, contact our service center for service.
Abnormal
magnet valve
71
Heating,
hot water
Power
connection
Trial run
• Check installation, status, crushing and clogging of exhaust
system. Contact the constructor to take necessary measure.
• Turn off with heating or hot water power button and restart.
• If the same symptom recurs, contact our service center
for service.
Abnormal hot
water thermistor
34
Hot water
Self-diagnostic
indication
Status of
use
Details
Measures
