Infinity REU-V1616W / REU-V1620W / REU-V2018W / REU-V2020W- 30 - Issue 2 - 21/03/06 ©Rinnai
13. Hot Water Outlet Thermistor Circuit
Check Hot Water Thermistor if error code “32” is displayed.
Disconnect relay connector (B
1
) and measure resistance White -White.
When disconnected: resistance
>1MΩ
When short circuit: resistance > 1 Ω
Normal: Check Heat exchanger outlet thermistor
Faulty: Replace hot water
outlet thermistor.
If normal proceed to Flame Rod circuit.
Faulty: Replace the Hot wat
er Outlet Thermistor.
Note: For controller
readout of thermistor temperature whilst operational refer maintenance monitor.
Disconnect relay connector (B
1
) and measure resistance White -White.
14. Surge Protector
Check the fuse.
a.) Unplug the power plug.
b.) Check whether or not the fuse (3A) x 2
has blown by measuring the resistance.
Normal: <1Ω
If norma
l go to step Electrical Fuse 13.
Faulty: Replace fuse/s (3Ax2). Check for a short next time it’s turned off.
15. Electrical Fuse
a.) Measure voltage between Blue and Brown on the connector (F
2
)
Normal :AC 207~264V
If normal proceed to b.). (11~13Ω)
Faulty: Check if voltage on the fuse terminal is AC207~264V
b.) Measure voltage between white and white on the (F
1
).
Normal: AC207~264V.
Faulty: replace surge protector unit.
16. Transformer
Check for the transformer
a.) Measure the voltage between white and white on the transmission connector (F).
Normal: A
C207~264V (11~13 Ω)
If normal proceed to b.). (11~13Ω)
Faulty: Check if the voltage on fuse terminals is AC207-264V.
Normal
Temp.
15
o
C30
o
C45
o
C60
o
C
Resistance 11.4∼14 kΩ 6.4~7.8 kΩ 3.6~4.5 kΩ 2.2~2.7 kΩ
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