23
Maintenance
SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION
PRESSURE
WASHER WILL NOT
PRODUCE HOT
WATER
(CONTINUED)
Inadequate water supply
Fully open faucet. Check for kinked or damaged
hose. Use 5/8" minimum hose. Check for debris
clogging inlet screen.
Trigger of trigger gun released
Squeeze trigger. Water must be spraying for
burner to light.
Thermostat set too low, or
defective
Raise thermostat setting. Replace if defective.
Manual gas valve not open Turn ON gas valve.
Defective gas valve Replace gas valve.
POOR OR NO
DETERGENT
FLOW
Inadequate detergent supply
Refill detergent container. Ensure that pick-up
screen is fully immersed.
Detergent screen or hose clogged
Clean. Always start with a clean detergent
container.
Clogged detergent injector check
valve
Clean check valve at detergent injector.
POOR CLEANING
Improper detergent concentration or
mixing
Mix detergent per manufacturer's instructions.
Ensure that powdered detergents are fully
dissolved.
Wrong detergent for the application Select appropriate detergent.
Rinsing with hot water
A final rinse with cold water will reduce water
spotting.
Detergent valve not opening Check that handle or knob is not slipping on shaft.
UNLOADER
CYCLES WHEN
TRIGGER GUN IS
OPENED OR CLOSED
Air in system Open and close trigger gun several times.
Unloader defective Replace if defective.
Water leak between unloader valve
and trigger gun
Check fittings, hose and trigger gun for leaks.
Repair or replace.
BURNER
SMOKES OR HAS
OBNOXIOUS ODOR
Stack restriction See Venting under Installation.
PRESSURE
RELIEF VALVE
LEAKING
Excessive pressure due to
defective unloader valve
Replace unloader valve.
Defective relief valve Replace relief valve.
Dirty relief valve Clean relief valve seat
Hotsy 900/1400 Operator’s Manual 9.803-325.0 - C
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