Jade JTRH Service Manual page 35

SYMPTOM
Griddle will not heat
evenly
Griddle will not recover
Top burner will not light
Oven burner will not light
Jade Range LLC – A Middleby Company
POSSIBLE CAUSES
Range not level
Wrong orifice
Gas-to-air ratio incorrect
Burner ports obstructed
Thermostat out of calibration
Low gas pressure
Gas-to-air ratio incorrect
Wrong orifice
Gas-to-air ratio incorrect
REVIEW COPY 7
Vent in pressure regulator blocked
Pilot positioned incorrectly
Obstruction in air shutter or
venturi
Water or grease in burner ports
Pilot flame too big or too small
Pilot not lit
Pilot flame too low
Pilot burner not positioned properly
Thermocouple not positioned
correctly or is defective
Wrong burner orifice
Gas pressure incorrect
Vent in pressure regulator blocked
Gas-to-air ratio incorrect
Titan TM Series Heavy Duty Range
Model Series JTRH, JMRH & JTRHE
REMEDY
Check and level range.
Verify orifice size for gas type and replace.
Perform air shutter adjustment.
Clean all burner ports. Replace as needed.
Calibrate thermostat.
Perform gas pressure check, adjust as
needed.
Perform air shutter adjustment.
Verify orifice size for gas type and replace.
Perform air shutter adjustment.
Clear obstructions from pressure regulator
or replace.
Adjust position of pilot flame to intersect
burner ports.
Clear obstructions.
Clean all burner ports.
Adjust pilot flame to intersect burner ports.
Check and light pilot.
Adjust pilot light to intersect burner.
Adjust pilot burner to intersect burner ports.
Adjust thermocouple to be directly in path
of pilot flame or replace.
Verify orifice size for gas type and replace.
Perform gas pressure check procedure and
adjust as needed.
Clear obstructions from pressure regulator
or replace.
Perform air shutter adjustment.
SM-35