Hayward H150 Installation, Operation And Service Manual page 39

!
WARNING: For qualified service personnel ONLY!
This procedure assumes that the filter system is operating. Jumper wires are used for system checkout
only. Remove all jumper wires following system checkout or damage to heater may result.
From page 36.
Remove jumper from thermostat
terminals.
Jump across each of the high
limits.
Does the main burner fire?
YES
Replace the high limit that caused
the heater to fire.
NO
Jump across system switch
terminals.
Does the main burner fire?
YES
Replace the system switch.
Call Hayward Technical Service:
Pomona, CA (909) 594-1600
Elizabeth, NJ (908) 351-5400.
SECTION 7. TROUBLESHOOTING
NO
Jump across each of the high
temperature limiter terminals.
Does the main burner fire?
Be sure the manual reset
high temperature limiter is not
NO
thrown.
Does the main burner fire?
Replace the high temperature
limiter switch that caused the
heater to fire.
YES
YES
37