Rinnai REU-V2632FFUG, Service Manual

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Infinity REU-V2632FFUG / HD200i REU-VM2632FFUC - 21 - Issue 1 - 16/12/09 ©Rinnai
REU-V2632FFUG / REU-VM2632FFUC
4). Flame Rod Circuit
Check flame rod. (
E
1
)
Yellow - flame rod.Over DC1µA
Disconnect flame rod terminal
(E
1
), & re-operate.
“72” indicated:- Proceed to 3.
“72” is not indicated:- check for electrical leaks from the flame rod.
Measure voltage between flame rod terminal (
E
1
)) and appliance earth.
Normal:
>1M

If normal, replace PCB.
Faulty:
Replace flame rod.
a.) Remove the Flame Rod terminal (
E
1
) repeat operation procedure, if “72” is displayed again check
the Hot water outlet thermistor.
If “72” is not displayed check current leakage from the Flame Rod.
b.) Measure voltage between body earth and Flame Rod terminal (
E
1
).
Normal:
voltage AC100~160V
If normal, replaced PCB
Faulty:
Replace Flame Rod.
c.) Check if the Flame Rod is securely fitted.
Normal:
replace the PCB
Faulty:
Adjust the fitting of the Flame Rod.
5). Electrical Fuse
a.) Measure voltage between Blue-Brown on the connector (
D
1
)
Normal
:AC 207~264V
If normal proceed to b.). (11~13 
Faulty:
Check if voltage on the fuse
terminal is AC207~264V
b.) Measure voltage between White-White on the (
F
1
).
Normal:
AC207~264V.
Faulty:
replace surge protector unit.
6). Thermal Fuse Circuit
Check the Thermal Fuse.
Disconnect relay connector (
G
1
) & (
E
3
) measure voltage between Red-Red
Normal:
< 1

If normal, replace PCB.
Faulty:
Replace Thermal Fuse if after confirming there is no damage to appliance.
7). Water Flow Sensor
a.)
Measure voltage between Yellow-Black of relay connector (
G
3
).
Normal:
DC 11~13V
If normal, proceed to
b
.
Faulty:
Replace PCB.
b.)
Measure voltage between Yellow-Black of relay connector
(G
3
).
Normal:
DC 4~7V
If normal, proceed to 2.
Faulty:
Replace water flow sensor.
Note: For water controller readout of water flow whilst operational refer maintenance monitor.
(Chapter 15) No. 1.