Reactor Operations, Checkout And Status / Error Codes; Operation - Lennox XC20-036-230-01 Installation And Service Procedure

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
Alert
Priority
Codes
Compressor top cap switch ex­
E 422 Moderate
ceeding thermal limit.
The top cap switch has opened 5
times within one hour. As a result,
E 442 Critical
the outdoor unit is locked out

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"
208/240
Voltage
"IN"
XC20
®
thermostat.
Alarm Description
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.
When compressor thermal protection sensor opens 5 times within 1 hour, outdoor stops
working. To clear, disconnect power to outdoor unit and restart.
.
Figure 42. XC/XP 20-024 and -036 Reactor
Figure 43. XC/XP 20-048 and -060 Reactor
Possible Causes and Clearing Alarm
208/240
Voltage
"OUT"
62