Error Code - Paloma PH2-20R OFN Engineering Handbook

64 | Page
33 – Error Code
Explanation:
Outlet Thermistor malfunction
1
Turn power OFF. Remove connector "R" on Control
Board. Measure resistance between Black #3 & Red
#4 wires: 7K – 23K Ohms. IF OK, attempt to operate
unit again. IF 33 Error Code does NOT display, unit
Blower Motor
64
SVC 820 Tankless Gas Trouble Shooting Manual
OUTLET THERMISTOR DIAGNOSTICS:
had a loose connection.
Molex Connectors
Diagnostic Checks:
•
Outlet Thermistor
Control Board
Bottom of Unit
Turn power OFF. Remove 3 screws for Control Board
mounting bracket. Remove connectors "M", "T" &
"G". Pull Control Board out of way to access BLACK
Molex for Outlet Thermistor located near the Blower
Motor.
3
Separate top and bottom of BLACK
Molex for Outlet Thermistor. Top of
Molex has 2 black wires and 1 red
wire. Bottom of Molex has 2 black
wires. Continue to Diagnostic Chart
on next page.
Outlet Thermistor
2
Screws