Pentair ETi 400 Installation And User Manual page 48

Section 3: Troubleshooting
48
Diagnostic LEDs: PS, HLS, TF, IGN, AFS, AG1, AG2, FS
A
Check for 24 VAC between V1
and GND terminal on ICM. See
NOTE 1
YES
Check for 24 VAC between
VALVE and GND terminal on
Control Board. See NOTE 2.
YES
Check for 24 VAC between
GAS VALVE on Control Board
See NOTE 2.
NO
Replace Control Board.
NOTE 1: Voltage appears immediately
after call for heat, and may be
on for only about 30 seconds.
NOTE 2: Voltage appears about 24
seconds after call for heat, and may
be on for only about 7 seconds.
CAUTION
Do not jumper a safety switch to
remedy a failed switch.
ETi 400 High Efficiency Pool and Spa Heater Installation and User's Guide
Check for 24 VAC between START
NO
and GND terminal on Fan Control
Board. See NOTE 1.
NO
Replace Fan Control Board.
NO
Fix wiring between VAL and GND
on ICM and Control Board.
YES
Fix wiring between GAS VALVE
terminals ond Control Board and
gas valve.
NOTE: ES1 is a spare and should be jumpered.
YES
Replace Ignition
Control Module.
Rev. C 4/2017
(Continued)