Service manual

REU-2532W Series 29 Rinnai
B C
D
Flame
detected (1
micro amp
or g reater)
Sparker OFF
Ignition failure
(3 attempts)
Modulating valve
operational
Combustion fan
operational
Water flow servo
operational
Gas solenoid open
Combustion proved
61 Flashing 10 Flashing32 Flashing
11 Flashing
No Combustion
10 Flashing12 Flashing
Flame failure (less
than 1 micro amp)
Water temperature
over 200 degrees
Thermistor faulty
(open or
short-circuit)
Combustion fan
rpm's abnormal
Flue restriction or
block
71 Flashing52 Flashing12 Flashing14 Flashing
Check grounding,
venting, and gas
pressures.
Modulating solenoid
valve abnormal
Hot water is sensed
Gas solenoids
operational
Safety circuit
operational
Overheat switch
activated
Thermal fuse melted
SV0, SV1, SV2, or
SV3 solenoid valve
circuit abnormal
Yes
Yes
Yes
No
No No