Rinnai Continuum Series Service Manual page 49

Nature of Fault Examination Point
Error code "11" 5. Check sparker.
displayed on
digital monitor.
6. Check main gas
solenoid valve (SV0)
Error code 71
7. Check solenoid
valve (SV1)
8. Check changeover
solenoid valve (SV2)
Error code "14"
9. Check thermal fuse
displayed on
digital monitor
10. Check overheat
(remaining flame) bi-
metal switch.
REU-2532FFU Series
Diagnostic Point
1. Measure voltage
between grey ~ grey of
connector F (sparker)
8
2. # Remove connector
F and measure the
8
resistance between
sparker terminals.
3. Check if unit is
sparking.
1. # Disconnect the
main solenoid valve
connector E from the
PCB, and measure
resistance between pink
~ black (SV0)
2. Measure voltage
between pink ~ black of
SV0 connector.
1. # Disconnect
connector E from the
PCB. Measure
resistance between
yellow ~ black (SV1)
2. Measure voltage
between yellow ~ black
of SV1 connector.
1. #Disconnect
connector E from PCB.
And measure resistance
between blue ~ black
(SV2)
2. Measure the voltage
between blue ~ black of
SV2 connector.
1. #Disconnect
connector B and C
3 3
measure resistance
between red ~ red
2. #Disconnect OHS
(remaining flame) bi-
metal switch festoon
terminal B and C and
3 3 ,
measure resistance
between terminal on
switch.
49
Values Y/N
90 ~ 110 VAC Yes
No
Is resistance >1MΩ
Yes
No
Is the sparker Yes
sparking?
No
1.7 ~ 2.1KΩ Yes
No
80 ~ 100 VDC Yes
No
1.7 ~ 2.1KΩ Yes
No
80 ~ 100 VDC Yes
No
1.7 ~ 2.1KΩ Yes
No
80 ~ 100 VDC Yes
No
Is resistance <1Ω?
Yes
No
Is resistance <1Ω?
Yes
No
Action Repair
o
N
Go to B-5-2
Replace PCB 20
Go to B-5-3
Replace sparker. 21
Go to B-6
Adjust/replace 22
electrode.
Go to B-6-2
Replace main 23
solenoid valve
(SV0)
Go to B-7
Replace PCB 24
Go to B-7-2
Replace (SV1) 25
Go to B-8
Replace PCB 26
Go to B-8-2
Replace (SV2) 27
Go to B9
Replace PCB 28
Go to B-10
Replace thermal 29
fuse
Replace PCB 30
Replace 31
remaining flame
bi-metal switch
Rinnai