Control Board - Paloma PH2-20R OFN Engineering Handbook

40 | Page
Measure resistance across black wire #6
and yellow wire #1 on Molex connector
0.8k – 2.4k Ohms
Measure resistance across black wire #6
and white wire #2 on connector "K":
0.8k – 2.4k Ohms
Measure resistance across black wire #6
and grey wire #3 on connector "K":
0.8k – 2.4k Ohms
Measure resistance across black wire #6
and red wire #5 on connector "K":
0.8k – 2.4k Ohms
Measure resistance across black wire #6
and blue wire #4 on connector "K":
0.8k – 2.4k Ohms
40
Gas Control Valve is 'OK'
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SVC 820 Tankless Gas Trouble Shooting Manual
GAS CONTROL VALVE Diagnostic Chart
Turn unit OFF and remove Molex connector
"K":
"K" to measure resistance
Is the
resistance
OK?
YES
Is the
resistance
OK?
YES
Is the
resistance
OK?
YES
Is the
resistance
OK?
YES
Is the
resistance
OK?
YES
NO
Replace Gas Control Valve
NO
Replace Gas Control Valve
NO
Replace Gas Control Valve
NO
Replace Gas Control Valve
NO
Replace Gas Control Valve