Filter
Top Products
Replace
controller*
(see note below).
III. TROUBLESHOOTING
III. d - CHECKING FOR ICED EVAPORATOR COIL:
With
evaporator
clear of ice is
there proper
air-flow?
Check evaporator
blower motor for
proper operation.
Replace
evaporator
blower motor.
Evap’r
or ducting
restriction.
Remove restriction.
Check DEF settings in
controller parameters.
Go to pages 33-36.
Check coil sensors.
Go to pages 6, 7 & 8.
Reset
control
parameters
NO NOT OK
YES
OK
NOT OK
Replace
failed
sensor.
NOT OK
OK
Will unit
enter manual
defrost cycle?
Does
compressor
shut-off in
defrost?
Check defrost heater.
YES
Replace
compressor
relay or module.
NO
YES
Will control
cycle unit at set
temps?
OK
YES
Problem
with ref’n
system.
Check cabinet sensor.
Go to pages 6, 7 & 8.
OK
NOT OK
-9-
Replace
failed
cabinet sensor.
*NOTE: See the corresponding pages to
remove and replace the controller:
• R & A Series Refrigerator & Freezer
Pages 21 - 22.
• G-Series Refrigerator & Freezer
Pages 21 - 22.
• Undercounter Refrigerator & Freezer
Page 23.
• R & A Series Hot Food Cabinets
Pages 21 - 22.