TROUBLESHOOTING GUIDE
Symptom Possible
Cause
Remedy
No power; Dixell temper-
ature controller display is
not lit
Switch is not in ON posi-
tion
Turn the switch ON
Unit is not plugged in
Plug in the power cord
Circuit breaker tripped
Reset the circuit breaker. If it trips again, disconnect the EVO heater
and reset once more. When it trips, call an electrician to replace the
breaker or replace the feeder.
Otherwise, investigate for a short in the heater. Test:
1. Heating
element
A. 208V - 18
Ω
B. 240V - 24
Ω
Replace if the difference is significant.
2. Bower motor—replace if necessary.
Advice: When testing the motor, please pay attention to: body temper-
ature (may be very hot!), rotor side wobbling, jammed rotor, partial or
complete winding shortage.
Power cord or plug is de-
fective
Replace or repair
Main switch is defective
Replace it
Dixell temperature con-
troller display is not lit,
but cooling fan is running
Defective thermostat Dixell Check wires for crimping or looseness—correct if necessary
Check wire connection on thermostat terminals #5 and #6—correct
connection or replace the thermostat
Dixell temperature con-
troller display is not lit
Cooling fan is not running 1. Check the fan’s cable connection-correct if necessary
2. Cooling fan is defective—replace if necessary
Dixell Temperature con-
troller display is lit, but
the food chamber is not
heated
Heating element is cold
1. Check wires for crimping or loose connection—correct if neces-
sary
2. Check wire connections on Dixell temperature controller terminals
#8 and #9—correct loose connection
3. Check Dixell temperature controller—replace if necessary
4. Check Hi Limit 350
°
F—correct connection or replace Hi Limit if
necessary
5. Check heating element (see above) - replace the element if de-
fective
6. Check Hi Limit 160
°
F. If the Hi Limit reset button has popped up,
figure out reason, repair and reset.
Heating element is hot.
CAUTION: Heating ele-
ment may reach tempera-
ture as hot as 650
°
F.
1. Blower fan is loose—tighten set screw or replace
2. Check blower motor:
A. Motor is very hot: overheat protection activated; figure out why
motor has overheated, correct it, cool down motor. Replace if the
motor is faulty.
B. Motor is cold: correct connections or replace motor or
capacitor if necessary.
EVO Heater: 208VAC and 240VAC. Reference connections on wiring diagram (previous page)
WARNING: All operations must be performed to requirements of NFPA-70E (Standard for
Electrical Safety in the Workplace) by a qualified electrician. CALL FOR SERVICE.
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