TurboChef HHB-8028 Service Manual page 38

22 DIAGNOSING AN ISSUE
Is the Hi-Limit
Thermostat tripped?
YES
Reset and
determine why it
tripped – excess
grease buildup, etc.
(Figure 25, page 20)
Troubleshooting:
F8: HEAT LOW
YES
Is the Blower Motor blowing air?
Is the Heater
NO
Element defective?
YES
Replace defective
heater. (page 54)
Verify Solid State
Relay is not shorted
across output.
Replace SSR.
(page 40)
NO
NO
Is the Solid State Relay
defective?
NO
YES
Is wiring from SSR to
I/O Control Board OK?
(See page 61 for
schematic.)
YES
Replace I/O Control
Board. (page 39)
See page 17
to troubleshoot
F1: BLOWER
(Blower Running
Status Bad)
NO
Correct wiring.