125
Table 63. M3 Control Parameters
Control Parameter
DescriptionUnits
Control Value
No DescriptionUnitsMax.DefaultMin.
Parameter Short
Description
Screen Name
145 COOL STAGE2 DIFFER
Cooling Stage 2
Differential
0.00 1.00 3.00 °F
Cooling stage 2 differential.
Used only with room sensor
applications.
Differential temperature must
be greater than or equal to
parameter 144 and less than
or equal to parameter 146.
146 COOL STAGE3 DIFFER
Cooling Stage 3
Differential
0.00 1.50 3.00 °F
Cooling stage 3 differential.
Used only with room sensor
applications.
Differential temperature must
be greater than or equal to
parameter 145 and less than
or equal to parameter 147.
147 COOL STAGE4 DIFFER
Cooling Stage 4
Differential
0.00 2.00 3.00 °F
Cooling stage 4 differential.
Used only with room sensor
applications.
Differential temperature must
be greater than or equal to
parameter 146.
148 HEAT STAGE1 DIFFER
Heating Stage 1
Differential
0.00 0.50 3.00 °F
Heating stage 1 differential.
Used only with room sensor
applications.
Differential temperature must
be less than or equal to pa
rameter 149.
149 HEAT STAGE2 DIFFER
Heating Stage 2
Differential
0.00 1.00 3.00 °F
Heating stage 2 differential.
Used only with room sensor
applications.
Differential temperature must
be greater or equal to pa
rameter 148.
150 HEAT STAGE3 DIFFER
Heating Stage 3
Differential
0.00 1.50 3.00 °F
Heating stage 3 differential
temperature. Used only with
room sensor applications.
Differential temperature must
be greater than or equal to
parameter 149.
151 HEAT STAGE4 DIFFER
Heating Stage 4
Differential
0.00 2.00 3.00 °F
Heating stage 4 differential
temperature. Used only with
room sensor applications.
Differential temperature must
greater than or equal to pa
rameter 150
152
AUTO CHGOVR
DEADBND
Automatic Changeover
Deadband
2.00 3.00 10.00 °F
Minimum autochangeover
dead-band temperature.
Dead band must be greater
than or equal to parameter
142 plus parameter 143.
Used in room sensor applic
ations.
153 AUTO CHGOVR DELAY
Automatic Changeover
Delay
1
Check unit
parameter label
as default may
be altered at
factory test.
15 Minutes
Autochangeover time delay.
Delay between heating and
cooling modes.