62
XC20
ERROR:
Table 12. Outdoor Control 7-Segment Display Alert Codes - Top Cap Switch
NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification).
Only the latest active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed. Alert
codes are also displayed on the iComfort Wi-Fi
®
thermostat.
Alert
Codes
Priority Alarm Description Possible Causes and Clearing Alarm
E 422 Moderate
Compressor top cap switch ex
ceeding thermal limit.
Issue: One of the wires from the top cap switch had pulled off one of the TP termin
als on the outdoor control board.
Corrective Action: Reconnected wire onto top cap terminal.
E 442 Critical
The top cap switch has opened 5
times within one hour. As a result,
the outdoor unit is locked out
.
When compressor thermal protection sensor opens 5 times within 1 hour, outdoor stops
working. To clear, disconnect power to outdoor unit and restart.
Reactor Operations, Checkout and Status / Error Codes
OPERATION:
Reactor (Inductor or choke) is a passive twoterminal electrical component that stores energy in its magnetic field. Reactors
are one of the basic components used in electronics where current and voltage change with time, due to the ability of induct
ors to delay and reshape alternating currents.
CHECKOUT:
Main Power ON – Voltage IN reactor should be the same as the voltage OUT. With main power OFF and reactor disconnec
ted from system; resistance between leads should be the same (brown IN to brown OUT, blue IN to blue OUT).
STATUS CODES:
None
ERROR CODES:
None
Voltage “IN” same as Voltage “OUT”
Figure 42. XC/XP 20-024 and -036 Reactor
208/240
Voltage
“IN”
208/240
Voltage
“OUT”
Figure 43. XC/XP 20-048 and -060 Reactor
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