Lennox XP21 Series Installation Instructions Manual page 40

Y1 DEMAND
COMPRESSOR
CONTACTOR
ENERGIZED
YES
COMPRESSOR
CONTACTOR
DE−ENERGIZED
W OUTPUT
ACTIVE)
NO
COMPRESSOR
ANTI−SHORT
CYCLE TIMER
BEGINS
INCREMENT
5−STRIKE
1
COUNTER
LED ALERT
CODE / OR
MODERATE
ALERT 418
DISPLAYED
ANTI−SHORT
CYCLE TIMER
ENDS
LED ALERT
CODE / OR
MODERATE
ALERT 418
CLEARED
506601−01
W OUTPUT
ACTIVE)
COMPRESSOR
ANTI−SHORT
YES
CYCLE TIMER
BEGINS
5−STRIKE
COUNTER
REACHES 5
WITHIN A SINGLE
Y1 DEMAND
W OUTPUT
HARDWARE
FAULT
LOCKOUT
LED ALERT
CODE / OR
CRITICAL
ALERT 419
DISPLAYED
1
If 5−strike counter has four or less strikes when Y1 demand is terminated or satisfied, the strike counter will
reset to zero. In a icomfort Touch
compressor contactor is de−energized. If demand is satisfied when alarm is not active, the 5−strike counter will
reset.
2
Lockouts can be reset by either cycling power off to the heat pump control's (A175) R terminal, or placing
a jumper on the field test pins (E33) between 1 to 2 seconds.
Figure 32. W Input Fault or Miswire Sequence of Operation
INITIAL TRIP
SWITCH IS
IGNORED FOR
90 SECONDS
NO
LED ALERT
CODE / OR
MODERATE
ALERT 418
DISPLAYED
ANTI−SHORT
CYCLE TIMER
ENDS
W OUTPUT
ACTIVE)
YES
WAITING FOR
W OUTPUT TO
DEACTIVATE
SERVICE
2
REQUIRED
®
thermostat enabled setup, the thermostat will terminate demand when the
Page 40
NORMAL
OPERATION
LED ALERT
CODE / OR
MODERATE
NO
ALERT 418
CLEARED