Paloma PH2-20R DVSN, Engineering Handbook

Page: 45 / 172

SVC 820-Tankless Gas Trouble Shooting Manual Page | 45
45
FLAME ROD(s) Diagnostic Chart
NO
YES
YES
NO
Cycle unit ON and check AC Volts at
white “M” & blue “T” connectors:
1 – 100 AC VOLTS
Is the AC voltage
OK?
Attempt to operate unit again.
IF the unit malfunctions due to an Error
Code 12:
Replace Control Board
Is Flame Rod(s)
detecting flame?
Cycle unit ON; while in Maintenance Mode check
Flame Rod(s) status under table 0Y. IF detecting
flame, Maintenance Mode will display:
Indoor Models: 05
Outdoor Models: 01
Attempt to operate unit again. IF the unit
malfunctions due to an Error Code 12:
Flame Rods(s) are ‘OK’
*CHECK: GAS, VENTING, & GROUND*
Remove and clean Flame Rod(s).
Attempt to operate unit again.
IF Flame Rod(s) still does not detect flame:
Replace Flame Rod(s).