Rinnai Continuum Series Service Manual page 29

B
Flame
detected (1
micro amp
or g re ater)
Yes
Sparker OFF
C ombustion proved
Gas solenoid open
Hot water is sensed
Water flow servo
operational
C ombustion fan
operational
Modulating valve
operational
Gas solenoids
operational
Safety circuit
operational
Yes
REU-2532FFU Series
C
Yes
Ignition failure
No
(3 a ttempts)
12 Flashing 10 Flashing
Flame failure (less Water temperature
than 1 micro amp) over 200 degrees
14 Flashing
Thermal fuse melted
Overheat sw itch
activated
No
No
11 Flashing
32 Flashing
Thermistor faulty
Combustion fan
(open or
rpm' s abnormal
short-circuit)
12 Flashing 52 Flashing
Check grounding,
Modulating solenoid
venting, and gas
valve abnormal
pressures.
29
D
No Combustion
61 Flashing 10 Flashing
Flue restriction or
block
71 Flashing
SV0, SV1, SV2, or
SV3 solenoid valve
circuit abnormal
Rinnai