LAARS HP-M2 Series - Installation, Operation and Maintenance Instructions - Manual (Page 34)

Page 34 LAARS Heating Systems
Figure 29. Red "Valve/Flame" Light Flashing (You Must Complete Figure 24 First).
RESET BOILER BY INTERUPTING POWER FOR 15
SECONDS - WHEN "VALVE/FLAME" LITE LIGHTS
IS THERE 24 VAC BETWEEN ORANGE AND
YELLOW WIRES ON GAS VALVE AND/OR DOES
GAS VALVE CLICK? TURN ON VALVES, FILL LP TANK ON LP
UNIT. RESET BOILER BY SWITCHING
POWER OFF FOR 15 SECONDS. RUN
THROUGH TWO TO THREE CYCLES
CHECK WIRES TO GAS VALVE
DOES BURNER IGNITE AND
APPEAR TO RUN PROPERLY?
NUISANCE LOCKOUT CAUSED FLASHING
LITE - CHECK COMBUSTION CHECK IGNITER-
IGNITER OK?
50 - 150 OHMS,
NO CRACKS. REPLACE
INTEGRATED
BOILER
CONTROL
P\N 2400-224 CORRECT
WIRING
REPLACE
IGNITER
REPLACE INTEGRATED BOILER CONTROL P/N 2400-224
INSTALL
CORRECT
ORIFICES BOILER CYCLES THROUGH THREE CYCLES AFTER
RESETTING AND “VALVE” LITE FLASHES
CHECK GAS AND AIR ORIFICE
FOR PROPER SIZE REPLACE GAS VALVE
ARE GAS VALVES AND GAS METER TURNED ON.
IS THERE GAS IN LP TANK (LP UNITS).
YES
YES
YES
NO
OK FAULTY NO
INCORRECT CORRECT
NO
Р Р
Р
Р
Р Р Р Р
Р Р
CHECK FOR GAS FLOW.
IS METER MOVING?
(GAS PRESSURE IS OK)
Р Р
YES NO
Р Р
Р
YES NO
OUT OF
PRODUCTION