Operating instructions

ManualsBrandsDometic ManualsHeat Pump630025

NOTE: The furnace has two wires for thermostat

connections. One wire should be marked 12V DC or

(+) and the other wire may be unmarked, or labeled

"thermostat". The wire marked 12V DC or (+) should

be capped and not used with the heat pump setup. The

wire marked "thermostat" or the unmarked wire is the

wire to connect to the violet thermostat pigtail.

If the 12V DC(+) is hooked to the violet wire atIf the 12V DC(+) is hooked to the violet wire at

If the 12V DC(+) is hooked to the violet wire at

the thermostat,the thermostat,

the thermostat,

the heat pump fan motor will NO the heat pump fan motor will NO

the heat pump fan motor will NO

operate in anoperate in an

operate in an

y modey mode

y mode

Before checking the thermostat for operation, first

determine that the thermostat is receiving DC power

from the relay board then disconnect the cable assem-

bly from the back of the thermostat.

Next, use a DC voltmeter and check from red wire

or Pin 2 on cable assembly (positive [+] lead from volt-

meter) to brown wire or Pin 7 (negative [–] lead from

voltmeter). You should get a voltage reading of approxi-

mately 12V DC. Next, move the negative (–) lead from

the voltmeter to each of the following wires or pins:

Blue (Pin 6),Blue (Pin 6),

Blue (Pin 6),

elloello

ello

w (Pin 5),w (Pin 5),

w (Pin 5),

Blac Blac

Blac

k (Pin 4) k (Pin 4)

k (Pin 4)

WhiteWhite

White

(Pin(Pin

(Pin

3)3)

3). You should get a voltage reading of approximately

12V DC on each wire. This indicates the relay board

and cable assembly are providing proper power and

circuits to the thermostat.

CABLE ASSEMBLY CONNECTORCABLE ASSEMBLY CONNECTOR

CABLE ASSEMBLY CONNECTOR

NOTE: Pin 2 (red wire) is positive DC volts when ambi-

ent (outside) air is above 40°F. Pin 1 (violet wire) is

positive DC volts when ambient (outside) air is below

40°F. When ambient (outside) air is below 40°F., only

"FAN LO ON" and "HI ON" will operate in the heat pump.

If the above voltage checks are correct and the unit

does not operate correctly, check the thermostat.

If the above voltage checks are not as described,

check the relay board (Section 4.5) and the cable as-

sembly (4.3).

o co c

o c

hechec

hec

k the thermostatk the thermostat

k the thermostat, first verify positive (+) DC is to

red wire (Pin 2), and negative (–) DC is to brown wire

(Pin 7) at the back of the thermostat. Operating range

is 10 to 16 volts DC.

With System Switch in COOL, Fan Switch in HI

AUTO and room temperature ABOVE setpoint tempera-

ture, you should have voltage between brown wire (Pin

7) to black wire (Pin 4), yellow wire (pin 5) and blue wire

(Pin 6). You should

NONO

T have voltage between brown

wire to violet or white wires. With room temperature

BELOW setpoint temperature, you should

NONO

T have

voltage between brown wire to violet, white, black, yel-

low or blue wires.

NONO

TE:TE:

TE:

When setpoint temperature is cWhen setpoint temperature is c

When setpoint temperature is c

hanghang

hang

eded

aboabo

abo

ve or belove or belo

ve or belo

w rw r

w r

oom temperatureoom temperature

oom temperature

there will be a there will be a

there will be a

three (3) minthree (3) min

three (3) min

ute delaute dela

ute dela

y in "active" terminalsy in "active" terminals

y in "active" terminals.

With System Switch in COOL, Fan Switch in LO

AUTO and room temperature ABOVE setpoint tempera-

ture, you should have voltage between brown wire (Pin

7) to black wire (Pin 4) and yellow wire (P5). You should

NOT have voltage between brown wire to violet, white

or blue wires. With room temperature BELOW setpoint

temperature, you should NOT have voltage between

brown wire to violet, white, black, yellow or blue wires.

NONO

TE:TE:

TE:

When setpoint temperature is cWhen setpoint temperature is c

When setpoint temperature is c

hanghang

hang

eded

aboabo

abo

ve or belove or belo

ve or belo

w rw r

w r

oom temperatureoom temperature

oom temperature

there will be a there will be a

there will be a

three (3) minthree (3) min

three (3) min

ute delaute dela

ute dela

y in "active" terminalsy in "active" terminals

y in "active" terminals.

With System Switch in COOL, Fan Switch in LO

ON and room temperature ABOVE setpoint tempera-

ture, you should have voltage between brown wire (Pin

7) to black wire (Pin 4) and yellow wire (Pin 5). You

should NOT have voltage between brown wire to violet,

white or blue wires. With room temperature BELOW

setpoint temperature, you should have voltage between

brown wire (Pin 7) to black wire (Pin 4). You should

NOT have voltage between brown wire to violet, white,

yellow or blue wires.

NONO

TE:TE:

TE:

When setpoint temperature is cWhen setpoint temperature is c

When setpoint temperature is c

hanghang

hang

eded

aboabo

abo

ve or belove or belo

ve or belo

w rw r

w r

oom temperatureoom temperature

oom temperature

there will be a there will be a

there will be a

three (3) minthree (3) min

three (3) min

ute delaute dela

ute dela

y in "active" terminalsy in "active" terminals

y in "active" terminals.

With System Switch in COOL, Fan Switch in HI ON

and room temperature ABOVE setpoint temperature,

you should have voltage between brown wire (Pin 7) to

black wire (Pin 4), yellow wire (Pin 5) and blue wire (Pin

6). You should NOT have voltage between brown wire

to violet or white wire. With room temperature BELOW

setpoint temperature, you should have voltage between

brown wire (Pin 7) to black wire (Pin 4) and blue wire

(Pin 6). You should NOT have voltage between brown

wire to violet, white or yellow wires.

NONO

TE:TE:

TE:

When setpoint temperature is cWhen setpoint temperature is c

When setpoint temperature is c

hanghang

hang

eded

aboabo

abo

ve or belove or belo

ve or belo

w rw r

w r

oom temperatureoom temperature

oom temperature

there will be a there will be a

there will be a

three (3) minthree (3) min

three (3) min

ute delaute dela

ute dela

y in "active" terminalsy in "active" terminals

y in "active" terminals.