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ALT011 10 10 AUTOMATIC Notify
ALT-011 Sensor Alert - Remote
Temperature Out of Range
Remote reset temperature
(TEMP_R_RESET) is outside
range.
Verify continuity to SIOB. Verify
voltage and ohm reading across
sensor. Replace sensor if ohm
reading is incorrect based on
temperature. Verify 1IOB
dipswitch setting.
ALT013 0 0 AUTOMATIC Notify
ALT-013 Sensor Alert - VFD
Speed Out Of Range
VLT Drive Actual Frequency >
(VFD Speed Command + VFD
Speed Alert Deadband) for
75 sec
Check VFD actual speed.
ALT101 0 0 MANUAL Notify
ALT-101 Coms Alert - LEN
Scan Warning
LEN scan warning (the traffic is
a little bad) but still works
ALT201 0 0 AUTOMATIC Notify
ALT-201 Configuration Error -
Controlled Water Delta T Reset
ALT202 0 0 AUTOMATIC Notify
ALT-202 Configuration Error -
Head Pressure
ALT203 0 0 AUTOMATIC Notify
ALT-203 Configuration Error -
Temp Reset
ALT401 0 0 AUTOMATIC Prevent Unit Startup
ALT-401 Prestart Alert - Low
Condenser Flow
No flow detected during Flow
Verification Time
Verify that with no flow there is
24 VAC across 7TB-15,16.
Verify that with flow there is
0 VAC across 7TB-15,16. Verify
continuity from 7TB to 1IOB.
ALT402 0 0 AUTOMATIC Prevent Unit Startup
ALT-402 Prestart Alert - Low
Evaporator Flow
No flow detected during Flow
Verification Time
Verify that with no flow there is
24 VAC across 7TB-13,14.
Verify that with flow there is
0 VAC across 7TB-13,14. Verify
continuity from 7TB to 1IOB.
ALT403 0 0 AUTOMATIC Prevent Unit Startup
ALT-403 Prestart Alert -
Excessive Recycle Starts
Number of recycle restarts in the
last 4 hours is greater than 5
Verify that there is sufficient load
to run the unit. Repeated recycle
result in oil dilution.
ALT404 0 0 AUTOMATIC Prevent Unit Startup
ALT-404 Prestart Alert - Invalid
Control Program
Compressor envelope control
logic is set to 0
Install new software package.
ALT405 0 0 AUTOMATIC Prevent Circuit Startup
ALT-405 Prestart Alert - Eco
EXV Prestart Check Cir A
One or more of the following are
TRUE: Cir A Eco EXV is not in
manual testing mode; Cir A Eco
EXV is not overridden by invalid
force readiness conditions; Cir A
Eco EXV failed precheck
movement and not responsive;
Cir A Eco EXV is not at zero
position; Cir A Eco EXV is not
overridden by invalid external
readiness conditions
Power cycle EXV. Verify EXV
wiring per wiring schematic.
Replace EXV.
ALT407 0 0 AUTOMATIC Prevent Circuit Startup
ALT-407 Prestart Alert - EXV
Prestart Check Cir A
One or more of the following are
TRUE: Cir A Main EXV is not in
manual testing mode; Cir A
Main EXV is not overridden by
invalid force readiness
conditions; Cir A Main EXV
failed precheck movement and
not responsive; Cir A Main EXV
is not at zero position; Cir A
Main EXV is not overridden by
invalid external readiness
conditions
Power cycle EXV. Verify EXV
wiring per wiring schematic.
Replace EXV.
ALT409 0 0 AUTOMATIC Prevent Circuit Startup
ALT-409 Prestart Alert - High
Condenser Pressure Cir A
Check condenser saturated
temperature is above its high
limit (TEMP_CND_ST_A)
Check the condenser pressure.
Check for high condenser water
temperature, low water flow,
tube fouling. Check c sensor
resistance and voltage drop.
Check for wiring in accordance
with schematic.
ALT411 5 4 AUTOMATIC Prevent Circuit Startup
ALT-411 Prestart Alert - High
Discharge Temp Cir A
Discharge temperature is above
its high limit (TEMP_DGT_A)
Check the condenser pressure.
Check for high condenser water
temperature, low water flow,
tube fouling. Check sensor
resistance and voltage drop.
Check wiring in accordance with
schematic.
ALT413 0 0 AUTOMATIC Prevent Circuit Startup
ALT-413 Prestart Alert - High
Line Voltage Cir A
VFD or STARTER line voltage is
above its high limit
(DRVA1STS_hi_volt)
Check actual line voltage and
match against VFD nameplate
and jobsite requirements.
Consult power utility if voltage is
high.
ALT415 0 0 AUTOMATIC Prevent Circuit Startup
ALT-415 Prestart Alert - High
Motor Temperature Cir A
Tested only on prestart
condition if all of the motor
temperature sensors are in the
range AND if one of the COMP
MOTOR WINDING TEMP is
greater than 190°F (88°C)
Check thermistor temperature.
Check sensor wiring per unit
schematic. Check motor cooling
line and isolation valves for
possible restrictions including
refrigerant filter drier.
Table 10 — PIC6 Alert Codes (cont)
CODE
HITS TO
ACTIVATE
HITS TO
RESET
RESET TYPE RESPONSE MESSAGE TRIP CONDITION TROUBLESHOOTING
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