User manual

11
Alarm messaging - Digital scroll controller (ZXD)
Alarm Mode Set Points Controller Actions Reset Remarks
dtL
DLT >= dtL after dLd time
delay
- Compressors are turned off
Auto reset when DLT < dtL-dLH
DLT
E01L
Low pressure is lower than ELP
(Level 3 Parameter)
- Compressors are turned off
- Fans are unchanged
Auto reset when LP >= ELP(Level 3)
LP
E0L
Mechanical LP
switch opens
- Compressors are turned off
- Fans are unchanged
Auto reset when Number of
activations < PEn in PEi time
LP
Manual reset when Number of
activations >= PEn in PEi time
- Press
key for 3 sec or
- Turn off and on the unit
LP
C-LA
LP < LAL
- Signaling only
Auto reset when LP = LAL + delta (0.3bar)
LP
C-HA
LP >= HAL
- Signaling only
Auto reset when LP = HAL -delta (0.3bar)
LP
E0H
Condensing Temperature
High
- Compressors are turned off - Fans are
turned on
Auto reset when Number of activations
< PEn in PEi time
Cond Mid Temp.
Manual reset when Number of activations
>= PEn in PEi time
- Press
key for 3 sec or - Turn off and on the unit
Cond Mid
F-HA
HP >= HAF
- HFC = yes, compressor are turned off
Auto reset when HAF + delta (0.3bar)
Cond Mid Temp.
P1
Suction Transducer failure or
out of range
- Compressors are activated according
to SPr or PoPr
Auto reset when probe is normal
LP
P2
Condenser Mid Coil Sensor
failure or out of range
- Fans are activated according to FPr
Auto reset when probe is normal
Cond Mid Temp.
P3
Discharge Temp Sensor failure
or out of range
-The functions related to No.3 probe
are disabled
Auto reset when probe is normal
DLT
DLT: Discharge line temperature
LP: Low pressure
HP: High pressure
LED1-Unit Status LED2-Error/Warning Code
Display Warning Signal
Controller
Pause Unit
Automatic
Reset
Controller
Lock Unit
Manual Reset
Display Status
Dis-
play
Error/Warning
Idle (Stop When
Reach To Set-point)
No error/warning
Run
Compressor Phase Error (Wrong Phase Sequence/Loss of
Phase)
Every Protection Action
Every Protec-
tion Action
NA
About To Start Compressor Inside Thermal Protector Trip Every Protection Action NA NA
Defrost Compressor Over Current Every Protection Action
<5 times
Protection In
1 Hour
6th Protection
In 1 Hour
Stop Due to Error Overheat Every Protection Action
ZX: <5 times
Protection In 1
Hour
ZXL: Every
Protection
ZX: <6th
Protection In 1
Hour
ZXL: NA
Lockout Compressor High Pressure Cut Out Every Protection Action
<5 times
Protection In 1
Hour
6th Protection
In 1 Hour
Compressor Low Pressure Cut Out Every Protection Action
Every
Protection
NA
DLT Thermistors Failure Every Protection Action
<5 times
Protection In 1
Hour
NA
Ambient Temperature Sensor Failure Every Protection Action NA NA
Mid-coil Temperature Sensor Failure Every Protection Action NA NA
PHE Vapor In Temperature Sensor Failure or Over Range Every Protection Action NA NA
PHE Vapor Out Temperature Sensor Failure or Over Range Every Protection Action NA NA
System Liquid Flood Back Warning ~20% Liquid Back NA NA
Notes:
New start, normal start by program and any start request delay
“LP Cutout”signal is not applicable in ZXL condensing unit.
PHE Vapor In/Out temperature sensor is not applicable in ZX medium temperature condensing unit.
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Diagnostic messaging - LED definition (ZX-MT and ZXL-LT)