Troubleshooting
32
313221A
No heat, and heater indicator light
is off.
Heater Power shut off, or circuit
breaker tripped.
Cycle Heater Power off
,
then on
to reset circuit
breaker.
Bad thermostat.
With power on, check for continu-
ity at clicks of heater control knob.
To replace thermostat, see
311210.
Bad overtemperature sensor (this
is a high temperature limit fuse
and must be replaced if blown).
With power on, check for continu-
ity at overtemperature sensor. To
replace sensor, see 311210.
Loose heater cable connections.
Check connections at Heater
Power switch. See F
IG
. 12, page
43.
No heat, but heater indicator light
is on.
Bad heater cartridge.
Check for continuity at heater car-
tridge connections: 16-18.6 ohms
for 120 V.
Heater on one side shuts off early
or continuously during recircula-
tion.
Y-strainer is plugged on that side. Clean or replace strainer, page
23.
Fluid inlet valve (52) closed.
Open valve.
B side pump is not priming
Running pump too fast.
Put finger over recirculation tube
while running, to build pressure,
and release. Repeat as neces-
sary.
Piston ball check is stuck in open
position.
Low air output at gun
Air valve at gun may be closed.
Turn air valve counter-clockwise
to open.
Sprayer air regulator may be
closed.
Pull to unlock and turn air regula-
tor clockwise to open.
Air connections may be loose.
Check all connections for leaking
air.
Damaged (leaking) air supply
hose.
Replace air supply hose.
Air intake filter clogged.
Clean or replace air intake filter
kit.
Mechanical air unloader stuck
open.
Replace mechanical air unloader.
Electrical air unloader stuck open. Replace electrical air unloader.
PROBLEM
CAUSE
SOLUTION
