Owner's Manual
COOL will blink when the COOL is running.
HEAT will blink when the HEAT is running.
HEAT 2 will blink when 2nd stage is running. (if available in heating system) (normal)
HEAT PUMP will blink when the heat pump is running. (pump)
HEAT 2 PUMP will blink when the heat pump and auxiliary heat are running. (pump)
EMER ON and HEAT 2 and will blink in EMER mode. PUMP will be off. (pump)
EMER is used when a heat pump cannot keep up and aux. heat is available. (pump)
(Only applies on heat pumps with auxiliary heat)
Heat from an auxiliary source is generally more expensive than heat from air
exchanger heat pumps. Auxiliary heat is necessary for faster recovery or backup for
air heat pumps.
The 'differential' jumper sets the temperature difference between when the auxiliary
heat shuts off and just the heat pump runs to maintain the target temperature.
In cold climates, the 2 (2F) should be used to maintain a good comfort level.
In warm climates, the 4 (4F) can be used to minimize using aux heat. (More efficient)
Status Indications
Differential
PG 11
C or F display
.
Centigrade / Fahrenheit selection. The C/F jumper is on the back of the thermostat
control unit. Separate the control unit from the wall-mounted terminals.
.
When changed, the thermostat must be reset to activate the change. When
resetting, all custom settings and
programming will be erased
and only the Energy-
Star
TM
program will remain.
12/24 hour
.
The thermostat can display
time in 12 or 24 hour formats.
The 12/24 jumper is on the
back of the thermostat
(see illustration).
.
When changed, the
thermostat must be reset to
activate the change.
PG
12
ELECT
GAS
o
C -
o
F
jumper
12/24hr
jumper
Differential
Gas - Electric
jumper
Circuit
Board
Rear View of control unit
234
NORMAL PUMP
SHORT C
OPEN F
Normal/Heat Pump
switch
4 Special Features cont.
4 Special Features cont.