35 33-00462—05
3090 Staging control Backup heat differentials Stage 1: Comfort*, 2.0F to
15F (1.00C to 7.5C)
Heat pump
selected with 1
or 2 backup
heat stages
No Both *Comfort setting not
available for dual
fuel
Stage 2: Comfort*, 2.5F to
15.5F (1.25F to 7.75F)
Heat pump
selected with 2
backup heat
stages
Yes T10+
3110 Staging control Backup heat upstage
timer
off, 30, 45, 60, 75, 90
minutes, 2, 3, 4, 5, 6, 8, 10,
12, 14, 16 hours
3090 set for
other than
“Comfort”
No Both
See section on
upstage timer and
holdoff timer
Backup heat holdoff timer auto, 15, 30, 45, 60, 75, 90,
105, 120 minutes
Upstage timer
set to other
than “Off”.
No T10+
3120 Equipment
Lockouts
Compressor
Lockout/Balance point
Off, -15F to 50F (-26.0 to
15.5C)
Configured for
heat pump with
an aux heat
stage
No Both
Backup Heat Lockout Off, 55F to 65F (-15 to 18.5
C)
No Both
3125 Equipment
Lockouts
Fan Lockout after cool
call ends
Off, 5-120 minutes in 5
minute increments
2070 =
at least 1
cool/compressor
stage
No T10+ This locks out the
fan after a cool call
even if the fan is set
to On or Circ mode
or if the fan is set to
run for air
temperature
balancing.
3140 Cycle rates Cool Cycles Per hour stage 1. Settings 1-6 2000 = other
than heat
pump. 2070 =
1 or 2
No Both
stage 2. Settings 1-6 2000 = other
than heat
pump. 2070 =
2
No Both
Compressor Cycles Per
Hour
stage 1. Settings 1-6 2000 = heat
pump
No Both
stage 2. Settings 1-6 2000 = heat
pump, 2070 =
2
No Both
3150 Cycle rates Radiant heat cycles per
hour
stage 1, settings 1-12 At least 1
radiant heat
stage
No Both
stage 2, settings 1-12 2 radiant heat
stages
No T10+
Heat Cycles per hour stage 1. Settings 1-12 2000 =
Conventional
forced air, or
other
No Both
stage 2. Settings 1-12 2000 =
Conventional
forced air &
2070 = 2-3
heat stages
No Both
stage 3. Settings 1-12 2000 =
Conventional
forced air &
2070 = 3 heat
stages
Yes T10+
3160 Cycle rates Backup heat cycles per
hour
backup heat cycles per
hour. Settings 1-12
2130 = at least
1 backup heat
stage selected
No Both
Backup heat cycles per
hour
backup heat cycles per hour
stage 2. settings 1-12
2130 = 2
backup heat
stage selected
Yes T10+
Table 9. Installer Setup (ISU). (Continued)
Firmware is occasionally updated at the factory or over the air. Some ISU settings may not be shown on models that lack the latest firmware.
ISU # Heading Question Options
Contingent
previous
setting?
EIM
needed?
T10, T10+
or both Notes