Rinnai Energysaver RHFE-1004FTA, Руководство по обслуживанию

Страница: 23 / 112

Rinnai Direct Vent Service Manual 23
(TR) Transformer:
Read Voltage across:
(SP) Sparker Board:
Set your voltage meter on the 400k scale, unplug the (5) pin connector on the sparker board. When reading
across the two lugs the blue and red wire connect to, you should read somewhere between 100k and 120k ohms
of resistance. When checking the spark sensing circuit, check across the orange wire (pin #35) and grey wire (pin
#32) on your 40 VDC scale. You should read between 4 - 5 VDC. During the spark this voltage will drop to
approximately 0 VDC. Once unit ignites the voltage will go back up to 4 - 5 VDC.
(POV, SV1, and SV2) Gas valve solenoids:
*Remember, when reading the resistance of a solenoid coil, you should read across the lugs on the coil.
RHFE-431FA Series
RHFE-556FA/FTRA Series
Troubleshooting
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.
Gray - Gray
4.5 VDC low fire to
11.5 VDC high fire
80 - 100 ohms 43 - 45
Black - Yellow 85 - 90 VDC 1,300 - 2,000 ohms 31 - 34
WIRE COLOR VOLTAGE RESISTANCE * PIN NO.
Blue - Red 85 - 110 VAC see below 33 - 36
WIRE COLOR VOLTAGE RESISTANCE PIN
WIRE COLOR VOLTAGE RESISTANCE PIN NO.
White - White 98 - 105 VAC 6 - 19 ohms 26 - 30
Red - Red 28 - 50 VAC 1 - 3 ohms 24 - 28
Black - Blue 10 - 15 VAC 0.5 - 2 ohms 25 - 29
Blue - Yellow 130 - 185 VAC 200 - 400 ohms 23 - 29
Gray - Gray 110 - 120 VAC 10 - 14 ohms 19 - 20