Paloma PH2-20R OFN Engineering Handbook page 75

Test DC voltage across black and red
wires on Molex connector "G":
144 – 192 DC VOLTS
Attempt to operate unit again.
If the unit malfunctions due to an Error
Code 61:
Replace Control Board
SVC 820-Tankless Gas Trouble Shooting Manual
61 – Error Code Diagnostic Chart
Is the DC voltage
OK?
YES
Press and hold down "MAX" button on Control Board
to activate Blower Motor. While Blower is running,
test DC voltage across black and white wires on Molex
connector "G":
12 – 18 DC VOLTS
Is the DC voltage
OK?
YES
Press and hold down "MAX" button on Control Board
to activate Blower Motor. While Blower is running,
test DC voltage across black and blue wires on Molex
connector "G":
4 – 10 DC VOLTS
Is the DC voltage
OK?
YES
Remove and reinsert connector "G".
Attempt to operate unit again.
If the unit malfunctions due to an Error
NO
Code 61:
Replace Control Board
Remove and reinsert connector "G".
Attempt to operate unit again.
If the unit malfunctions due to an Error
NO
Code 61:
Replace Control Board
Replace Blower Motor
NO
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