Y1 DEMAND
HIGH |
| |
PRESSURE | CLOSED | |
SWITCH (S4) | ||
|
COMPRESSOR CONTACTOR ENERGIZED
OPEN
OPEN
COMPRESSOR CONTACTOR DE−ENERGIZED
COMPRESSOR ANTI−SHORT CYCLE TIMER BEGINS
INCREMENT
5−STRIKE
COUNTER1
LED ALERT
CODE / OR
MODERATE
ALERT 412
DISPLAYED
ANTI−SHORT CYCLE TIMER ENDS
COMPRESSOR CONTACTOR ENERGIZED
HIGH
PRESSURECLOSED
SWITCH (S4)
1If 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® thermostat enabled setup, the thermostat will terminate demand when the compressor contactor is de−energized. If demand is satisfied when alarm is not active, the 5−strike counter will reset.
2Lockouts can be reset by either cycling power off to the heat pump con- trol’s (A175) R terminal, or placing a jumper on the field test pins (E33) be- tween 1 to 2 seconds.
5−STRIKE
COUNTER
REACHES 5
WITHIN A SINGLE
Y1 DEMAND
HIGH
PRESSURE
SWITCH (S4)
LOCKOUT
LED ALERT |
| |
CODE / OR | SERVICE | |
CRITICAL | ||
REQUIRED2 | ||
ALERT 413 | ||
| ||
CLEARED |
|
SERVICE
REQUIRED2
OPEN
HIGH
PRESSURE SWITCH (S4)
WAITING FOR PRESSURE SWITCH TO CLOSE
LED ALERT
CODE / OR
CLOSED 
MODERATE ALERT 412 DISPLAYED
CLOSED
NORMAL
OPERATION
Figure 29. High Pressure Switch (S4) Sequence of Operation
Page 37
XP17 SERIES