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FORM 145.15-IOM7 (412)
JOHNSON CONTROLS 25
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 anti-short cycle delays (ASCD) are
bypassed for one cycle. When pressed twice, any
active lockouts are reset
.
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
On Steady This is Control Failure
2 Flashes Control waiting ASCD (Anti-Short Cycle Delay) *
3 Flashes High Pressure Compressor 1 Lockout
4 Flashes High Pressure Compressor 2 Lockout
5 Flashes Low Pressure Compressor 1 Lockout
6 Flashes Low Pressure Compressor 2 Lockout
7 Flashes Condensate Overflow Switch Lockout
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
OFF No Power or Control Failure
Note: Flash rates marked with * are NOT alarms.