33
ALM523 10 4 MANUAL
Prevent Circuit Startup
or Hard Stop
ALM-523 Protective
Limit - High Discharge
Temp Cir A
Chiller is running AND compressor
discharge temperature sensor is in
range AND compressor discharge
temp (TEMP_DGT_A) > 140°F.
System maintains DT at or below
Compressor Maximum Discharge
Temperature* at all times** during
compressor operation.
* Default 60°C (140°F)
** Except for 30 seconds following
compressor start.
ALM525 10 4 MANUAL
Prevent Circuit Startup
or Hard Stop
ALM-525 Protective
Limit - High Motor
Temperature Cir A
System maintains Compressor Motor
Temperature* (TEMP_MTRW_A) at
or below Compressor Motor
Maximum Temperature at all times
during compressor operation.
* Default 93.3°C (200°F). Threshold,
hysteresis, and persistence are
configurable.
ALM529 0 0 MANUAL
Prevent Circuit Startup
or Hard Stop
ALM-529 Protective
Limit - Low Disch
Pressure Cir A
System maintains DST
(TEMP_DIS_ST_A) at or above the
lower limit given by the Compressor
Envelope (CMPA1CTL_eDSTMn)
subject to operation below
compressor envelope minimum
DST(CMPA1CTL_eDSTMn)
10 minutes
ALM531 10 4 MANUAL
Prevent Circuit Startup
or Hard Stop
ALM-531 Protective
Limit - Low Evap
Refrigerant Temp Cir A
System maintains ERT
(TEMP_EVAP_T_A) no less than
0.55°∆C [1.0°∆F] above the freeze
point (SERVICE1_freezesp) of the
chilled fluid subject to operation
below (fluid freeze point
(SERVICE1_freezesp) + 0.55°∆C
[1.0°∆F])>= 60 seconds at startup
ALM535 0 4 MANUAL
Prevent Circuit Startup
or Hard Stop
ALM-535 Protective
Limit - Low Oil Pressure
Difference Cir A
System ceases operation when the
Oil Differential Pressure
(PRESSURE_OIL_PD_A) <
(PRESSURE_OILPA1RQ) while the
following is TRUE:
• Oil Pump is ON (23XRV ONLY); -
Compressor is ON
• PRESSURE_OILPA1RQ is fixed
at 15 psi
ALM545 0 0 MANUAL Hard Stop
ALM-545 Protective
Limit - Evap Reverse
Flow
TEMP_ECW < TEMP_LCW after
running for 60 sec
ALM546 0 0 MANUAL Hard Stop
ALM-546 Protective
Limit - Cond Reverse
Flow
TEMP_LCDW < TEMP_ECDW after
running for 60 sec
ALM547 0 0 MANUAL Hard Stop
ALM-547 Protective
Limit - Compressor A
Feedback
Feedback from compressor has not
been received after 10 seconds of
sending command. This could be a
signal that there is a communication
issue to starter or VFD.
ALM550 0 0 MANUAL Hard Stop
ALM-550 Protective
Limit - VFD A Speed
Out Of Range
This fault detection is enabled only
during steady state conditions; hence
this fault is not monitored during
compressor speed ramp up and
ramp down.
(DRVA1STS_SPD) >
((CMPA1CTL_cmd) + VFD Speed
Alert Dead band*) for 75 sec.
* Default 10%
ALM801 0 0 MANUAL
Prevent Circuit Startup
or Hard Stop
ALM-801 VFD Fault -
VFD A1 Fault1
First fault detected in VFDA1.
ALM802 0 0 MANUAL
Prevent Circuit Startup
or Hard Stop
ALM-802 VFD Fault -
VFD A1 Fault2
Second fault detected in VFDA1.
ALM803 0 0 MANUAL
Prevent Circuit Startup
or Hard Stop
ALM-801 VFD Fault -
VFD A1 Fault3
Third fault detected in VFDA1.
ALM901 0 0 MANUAL
Prevent Unit Startup or
Hard Stop
ALM-901 JSON Error -
Parsing Error
ALM902 0 0 MANUAL
Prevent Unit Startup or
Hard Stop
ALM - 902 Software
Exception [populated at
runtime]
Any exception from the application
(variable text)
ALM903 0 0 MANUAL
Prevent Unit Startup or
Hard Stop
ALM-903 Protective
Limit - UI Freeze
Reboot
UI is frozen more than 60 seconds.
Table 11 — PIC6 Alarm Codes (cont)
CODE
HITS TO
ACTIVATE
HITS TO
RESET
RESET TYPE RESPONSE MESSAGE TRIP CONDITION TROUBLESHOOTING
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