44
VI. SERVICE DIAGNOSIS
1. ERROR CODE INDICATION
* See the controller board service manual for detailed diagnosis and remedies.
* The error and caution codes other than E1 and E2 are indicated as “EE” in the 7-segment
display at the time of occurrence. But the error history is recorded as the actual error
codes in parenthesis, and a maximum of five errors are indicated from the latest entry.
Error Item
Description
Operation Reset
E1 Freeze
error
Freeze backup timer (45/60 minutes)
counts up before freeze cycle completes,
and evaporator temperature is 0°C or
higher.
Shut down
Press reset switch
E2 Defrost
error
Defrost backup timer (30 minutes) counts
up before defrost cycle completes.
Shut down
Press reset switch
EE
(E3)
Water pan
opening error
Water pan has not fully opened within 60
seconds, and 3 minutes have passed
even with opening failure control.
Halt
Press reset switch
Unit resumes operation after 60 minutes
and repeats the above error.
Shut down
EE
(E4)
Water pan
closing error
[Controller board before ver. 1.6A]
Water pan has not fully closed within 60
seconds, and 3 minutes have passed
even with closing failure control.
Halt
Press reset switch
[Controller board ver. 1.6A and later]
Water pan has not fully closed within 50
seconds, opened and started to close
again, but failed to close fully within 50
seconds.
Unit resumes operation after 60 minutes
and repeats the above error.
Shut down
EE
(E5)
High
temperature
error
Evaporator temperature stays 60°C or
higher for 5 seconds or more.
Shut down
Press reset switch
EE
(E9)
Condenser
thermistor error
Condenser thermistor circuit is open or
shorted for 2 seconds.
Shut down
Replace
thermistor
EE
(EA)
Data error
Model setting data memory IC is
defective.
Shut down
Replace controller
board
EE
(EC)
Cube control
thermistor error
Cube control thermistor circuit is open or
shorted for 2 seconds.
Shut down
Replace
thermistor
EE
(Ed)
Water regulator
error
Cooling water cannot stop by water
regulator error, and thermistor senses set
point or lower temperature.
Continue Press
reset
switch
Caution Item
Description
Operation Reset
EE
(C2)
High pressure
[Air-cooled] Condenser thermistor
senses 63°C or higher temperature.
[Water-cooled] Pressure switch senses
2.65MPa or higher pressure.
Compressor
stops
After 5 minutes,
condensing
temperature 50°C
or lower, pressure
1.96MPa or lower
Summary of Contents for IM-240ANE
Page 4: ...1 I SPECIFICATIONS 1 DIMENSIONS SPECIFICATIONS a IM 240DNE Air cooled ...
Page 5: ...2 b IM 240DNE C Air cooled ...
Page 6: ...3 c IM 240DWNE Water cooled ...
Page 7: ...4 d IM 240DWNE C Water cooled ...
Page 8: ...5 e IM 240DWNE R452 Water cooled ...
Page 9: ...6 f IM 240ANE Air cooled ...
Page 10: ...7 g IM 240AWNE Water cooled ...
Page 11: ...8 h IM 240DSNE Remote Air cooled ...
Page 12: ...9 j URC 240C E 4 Condenser Unit ...
Page 20: ...17 a CONTROLLER BOARD LAYOUT Main Board Sub Board Combination ...
Page 37: ...34 2 WIRING DIAGRAM a IM 240DNE C XNE C IM 240DWNE C R452 XWNE C R452 IM 240ANE AWNE ...
Page 38: ...35 b IM 240DSNE XSNE URC 240C E 4 ...
Page 69: ...66 Fig 16 Controller Board Board Support Control Box Cover Screw ...