Rinnai Energysaver RHFE-1004FTA, Service Manual

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Rinnai Direct Vent Service Manual 71
RHFE-1004FA
RHFE-1004RFA
RHFE-1004FTA
Troubleshooting
(AC IN)
Read voltage across: Voltage Potential Pin Numbers
Black-White 120 VAC Pin # 1-2
(TR2) Transformer: (Connector CN2 AC Out)
Read voltage across: Voltage Potential Read resistance Pin Numbers
Gray - Gray 98-125 VAC 4--6 Ω 1-7
Black - Yellow 200-220 VAC 250--300 Ω 5-8
Black - Blue 17 VAC 1--2 Ω 8-9
White - White 98-125 VAC 4--6 Ω 2-3
Red - Red 35 VAC 1--2 Ω 4-10
(SP) Sparker: (Connector CN4)
Read voltage across: Voltage Potential Read resistance Pin Numbers
Red-Blue 85-100 VAC 105K-115K Ω 3-6
(SV1, SV2, SV3, POV) Main Solenoid Valves: (Connector CN4)
Read voltage across: Voltage Potential Read resistance Pin Numbers
SV1 - Yellow ~ Black (hold) 85-90 VDC 1400-1800 Ω 1-4
SV2 - Yellow ~ Black (assist) 85-90 VDC 1200-1600 Ω 1-4
SV3 - Black ~ Pink 85-90 VDC 1200-2000 Ω 2-5
POV - Gray ~ Gray 6-16 VDC 80-90 Ω 2-6
(BL) Combustion Fan Motor: (Connector CN8) DC Motor 37VDC 8 Watts
Read voltage across: Voltage Potential Read resistance Pin Numbers
Black-White 7-12 VDC 8-10 K Ω 7-8
Yellow-White 4-5 VDC 4-6 K Ω 4-8
Red-White 10-30 VDC N/A 3-8
WARNING
There are a number of live tests that are required when fault finding this product. Extreme care should be used at
all times to avoid contact with energized components inside the furnace.
You MUST be a qualified service person before proceeding with these test instructions.
Before checking resistance readings, turn off power source to unit and then isolate each item to be checked from
the circuit by unplugging it.
When setting gas pressures on one of these units, please check the complete model number you are trouble-
shooting. Gas pressures and dip switches can vary among models. Always check the rating plate for complete
information and follow directions.