Diagnostic Signal - Emerson Copeland EazyCool ZX Series Manual

2.8.3 Diagnostic signal

Display LED 1 - Unit Status
Idle (stops when reaches set-
point)
Run
About to start(*)
Defrost
Stop due to error
Lockout
Table 4: Definition of diagnostic signal
(*) This signal is for Fresh Start, Normal Start Program and any start request delay.
NOTE: All error/warning messages are priority-ranked from highest to lowest.
If unit is initially powered on, the diagnosis module will show signals as follows:
(1second) ->
- Software version number.
- Unit identification code
"F" - With OD Fan Speed Control; "－" - Without OD Fan Speed Control
"L " - ZXL; "－" - ZX
- Power On (see Table 6)
OD Fan Speed
Unit Type
Control
ZX
ZX
Table 5: Initialization signals
C6.1.6/1108-0509/E
No error/warnings
Compressor Phase Error (wrong phase
sequence/loss of phase)
Compressor Inside Thermal Protector Trip
Compressor Over Current
Discharge Gas Overheat
Compressor High Pressure Cut-out
Compressor Low Pressure Cut-out
DLT Thermistors Failure
Ambient Temperature Sensor Failure
Mid-coil Temperature Sensor Failure
System Liquid Floodback Warning
(3 seconds) ->
Software
Version No.
Yes 02
No 03
LED 2 - Error/Warning Code
(3 seconds) ->
Unit Identification Code
– F
– –
7