Thermister Outage; Service; Troubleshooting; Display Shows Er Or P1 - Electrolux EI15IM55GS Service Manual

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Service Information
Upon initial startup, this unit will enter mode number 5
which is a three-minute water fill regardless of the
thermistor temperatures. This only occurs when the intial
startup is caused by a power-up of the main board.
Following the three-minute water fill, the unit moves into
mode 1 which is the freezing mode. In this mode the
water is pumped from the sump trough over the ice
maker grid by the circulation pump. This mode typically
lasts 10-20 minutes and is regulated by the temperature
of the thermistor mounted near the dryer (thermistor 4).
At the conclusion of the freeze cycle the unit will enter
mode 2 which is the ice harvest. This harvest can last up to
three minutes. During this mode the water trough also
refills.
Before the next cycle begins, the custom electronic board
determines whether the bin is full. A temperature below
34°F, or a temperature below 35°F for at least one hour
will stop the unit from producing ice. The ice-making will
always stop at the conclusion of a harvest cycle. It will
never stop in the middle of a cycle.
The custom electronic board continuously monitors the
optional P60 pump to ensure the drain line is not
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becoming restricted. In the event of a drain line
obstruction, the display interface will show "P1." If the
drain remains restricted the unit will stop ice production
until the drain clears. In the event of a partially restricted
drain, reduced ice rate will be noticed as the unit
continuously turns on and off to eliminate any chances of
overfilling the unit with water. If no pump is used the
pink jumper needs to be connected to the power cord in
its place.
A cleaning mode is available through the user interface by
using the key sequence described in the Controls Section.
The cleaning mode lasts about 45 minutes, at which point
the unit will sit idle for another 15 minutes. During this
time the display will show "CL." At the conclusion of the
cycle the unit will automatically turn back on.
Thermistor Outage:
In the event that a thermistor fails, the unit will stop all
functions and display "ER" on the user interface. The
exact error can be accessed via the service mode.

Service:

The CLR2160 model uses four relays and two thermistors.
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There is a variety of built-in servicing features to aid in
diagnosing the root problem associated with a unit.
To check to see which relays are currently operating, hold
the COLDER key and press the ON/OFF key three times.
When entering the sequence, keep the COLDER key
pressed until you completely release the ON/OFF key for
the third time. The display will cycle through a series of
numbers to tell which relays are energized. For example,
if the unit was in ice-making mode the display would
show 11 20 31 40 51 60 70. The first number is the relay
number. In the second number, "1" means on and "0"
means off. The relay information can be found in the
Control Section.
Each relay can also be turned on and off individually to
determine whether or not the board and component are
operating. If a board is suspected of not operating
correctly you can run through this sequence to ensure
each component is turning on and off through the board
correctly. Go into service mode and choose option #22.
This will cycle every relay on and off showing 10 11 20 21
.... If a component fails to turn on when the relay does,
you can verify if there is voltage present by using a
voltmeter to check the board output.
To view the actual thermistor readings, hold the WARMER
and COLDER keys for about five seconds. The display will
cycle through the three thermistors and their
temperatures. If a thermistor is unused in a unit it will
show a "0" reading. The CLR2160 uses thermistors 2 and
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4. For thermistor 4 the display will only show up to "99."
In the event the temperature is higher than this the
display will show a flashing "99."

Troubleshooting:

Display shows ER or P1

E1, E2, E9 Bad thermistor errors. Replace thermistor.
Check for thermistor errors by accessing
"View thermistor # status (19, 20, or 21)." If
the error code is repeated, the thermistor is
open or shorted. If a temperature is
displayed, the thermistor is not defective.
P1 Pump circuit is detecting a drain problem.
Consult a plumber to resolve the issue. If unit
does not have a P60 installed, then the
jumper wire is missing in place of the pump.
Any other error messages will not affect the operation of
the CLR2160 model.
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After checking the errors be sure to clear the error log by
performing service option 12.

No ice

Check the ice bin temperature. If the temperature is in the
34-35°F range, the unit is shut down due to low
temperature inside. This could be caused by low ambient
temperatures or running the unit without a water supply
attached.
If the ice bin temperature is above 35°F, the unit should be
producing ice. Check to ensure the water trough is full
and the pump is operating. If the components are not
operating, see the service section above.

Too much ice

Ensure there is Permagum around the thermistor hole. If
there is, proceed to the next step.
The control board is equipped with an adjustment to
adjust the level of ice in the bin for customer preference
or when used in abnormal installations. With ice stacked
to the desired level, check the bin temperature by holding
Model CLR2160
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