FORM
Current alarms or active restrictions are flashed on the microprocessor control LED.
1.LAST ERROR – When this button is pressed and released, it flashes the last five (5) flash codes on the board’s LED. The most recent alarm is shown first and the oldest alarm is shown last.
2.TEST RESET – When this button is pressed and released, any
3.COMM SETUP – If the board is to be networked with other units, this button is used to set the network address. Press the button once and it scans the bus, then assigns itself the first available address, (starts at 2). It then flashes that address one time. Pressing the button twice causes the control to flash the address.
FLASH CODES | Description |
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On Steady | This is Control Failure |
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2 Flashes | Control waiting ASCD |
3 Flashes | High Pressure Compressor 1 Lockout |
4 Flashes | High Pressure Compressor 2 Lockout |
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5 Flashes | Low Pressure Compressor 1 Lockout |
6 Flashes | Low Pressure Compressor 2 Lockout |
7 Flashes | Condensate Overflow Switch Lockout |
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11 Flashes | Compressor(s) locked out due to Economizer running (Free Cooling) * |
13 Flashes | Compressor Held Off due to Low Voltage |
14 Flashes | EEPROM Storage Failure |
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OFF | No Power or Control Failure |
Note: Flash rates marked with * are NOT alarms.
JOHNSON CONTROLS | 25 |