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Rinnai Tankless Water Heater Installation and Operation Manual 74
15
Venturi Control
•
•
•
16
High Outgoing Temperature
(safety shutdown because water heater
is too hot)
•
•
17
Venturi Blockage
•
•
blocked.
•
19
Electrical Grounding
•
short.
21
Data Transfer Error
•
25
Condensate Pump (Accessory)
•
are good.
•
32
Outgoing Thermistor
•
•
•
•
33
Heat Exchanger Thermistor
•
troubleshooting.
38
Exhaust Thermistor
•
•
• Replace sensor.
41
Freeze Protection Thermistor
•
troubleshooting.
51
Inlet Thermistor
•
•
•
• Replace sensor.
52
Gas Valve
•
•
short circuit.*
•
• Please call Rinnai technical
54
High Exhaust Gas Temperature
•
and not blocked.
•
too high.
•
heater.
61
Combustion Fan
•
•
harness.*
•
63
Recirculation Low Flow
•
•
debris.
•
•
•
recirculation line.
65
Water Flow Control
•
•
70
PC Board
• Replace PC Board
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