Jade JTRH Service Manual page 34

SYMPTOM
Product in oven
dried out
Oven pilot will not light
(Standard Oven)
Oven pilot will not light
(Convection Oven)
Griddle will not achieve
temperature
Griddle will not hold
temperature
SM-34
POSSIBLE CAUSES
Temperature too low
Thermostat out of calibration
Baking time too long
Air not purged from gas lines
Red button not pressed long
enough
Pilot orifice clogged
Failed safety valve
Failed thermocouple
Failed ignition module
REVIEW COPY 7
Defective sparker
Defective wire to sparker
Thermostat out of calibration
Low gas pressure
Incorrect orifice
Thermostat sensor not in
correct position
Flame hitting thermostat sensor
Gas-to-air ratio incorrect
Burner obstructed
Thermostat is out of calibration or
by-pass flame is too high
Vent in pressure regulator blocked
Wrong dial on thermostat
Titan TM Series Heavy Duty Range
Model Series JTRH, JMRH & JTRHE
REMEDY
Adjust temperature and/or cooking times.
Calibrate thermostat.
Adjust temperature and/or cooking times.
Clear air from lines and re-light pilot.
Keep red button pressed long enough to
maintain pilot light.
Clean pilot orifice.
Replace safety valve.
Replace thermocouple.
Test and replace ignition module.
Test and replace sparker.
Test and replace sparker.
Calibrate thermostat.
Perform gas pressure check.
Verify orifice size and replace with correct orifice.
Verify sensor out of factory position and
affix in correct position.
Move sensor to correct position and check
sensor for flame damage.
Perform air shutter adjustment.
Clean all burners.
Calibrate thermostat and/or
adjust bypass flame.
Clear obstructions from pressure regulator
or replace.
Replace with correct dial.
Jade Range LLC – A Middleby Company