CONTROL SETTINGS
Johnson Controls
| Error Code | System Status |
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F1 | Indicates an open or | Alarm output on compressor |
| shorted temperature | runs according to the sensor |
| sensor. Cycle Power | failure mode selected (para- |
| to reset control. | meter sf) |
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F2 | Indicates an open or | Alarm output on defrost |
| shorted evaporator | cycle is controlled by para- |
| sensor. Correct | meters di (defrost initiation) |
| problem to reset | and dd (defrost duration) |
| control. |
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A1 | Digital input was open | Compressor off |
| for longer than time | Alarm output on |
| delay (id) and digital |
|
| input option (if) 1 is |
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| selected. |
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A2 | Digital input is closed | Alarm output is on |
| and digital input option |
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| (if) 1 is selected. |
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A3 | Digital input is open | Fan output is off |
| for longer than time | Alarm output is on |
| delay (id) and digital |
|
| input option (if) 3 is |
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| selected. |
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HI | Temperature has | Alarm output is on |
| exceeded the high |
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| temp. alarm value (AH). |
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LO | Temperature has fallen | Alarm output is on |
| below the low temp. |
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| alarm value (AL). |
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EE | Program failure: control | Alarm output is on |
| must be replaced. | Other outputs off |
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To Initiate Manual Defrost:
Hold the Defrost button down for 3 seconds.
To program parameters:
1. Hold the “Enter” button down for about 10 seconds. The display will change to “Hy.”
2. Press the “Up” and “Down” button until the desired parameter is shown
3. Press the “Enter” button. The para- meter’s current value will be shown.
4. Press the “Up” and “Down” button until the desired value is shown.
5. Press the “Enter” button to save the new value. After 10 seconds of inactivi- ty, the display will return to its normal function.
To change setpoint:
1. Hold down the “Enter” button down for 3 seconds. The display will change to show the setpoint.
2. Press the “Up” or “Down” button until you reach the new setpoint.
3. Press the “Enter” button to save the new setpoint.
To lock and unlock the unit:
} | Press the “Enter,” the “Up,” and the |
“Down” buttons in sequence and hold | |
them all down until “- - | |
Hold for about 10 seconds until the | |
current temperature is displayed. |
To Initiate a deep freeze cycle:
Press and the “Enter” and “Up” buttons 
} in sequence and hold for five seconds.
The compressor status LED will light.
To Initiate Self-Test:
IMPORTANT: Disconnect loads before 
} beginning self test. Cycle power to
resume operation.
Press the “Up” and the “Down” buttons in sequence and hold for 5 seconds.
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