Operating instructions

ManualsBrandsDometic ManualsHeat Pump630025

100

To check the changeover thermostat, first verify the air tem-

perature at the capillary tube. If the temperatures are above

45°F., continuity should be between terminals 2 to 3 and no

continuity between terminals 2 to 1. For temperatures below

40°F., continuity should be between terminals 2 to 1 and no

continuity between terminals 2 to 3.

NOTENOTE

NOTE: A defective changeover thermostat can keep the

compressor from operating in the COOL or HEAT PUMP

modes.

13F. TIME DELAY RELAY

The time delay relay is used on Model 39424.601. Its purpose

is to provide a thirty second delay of power to Circuit 2 System

after Circuit 1 System. To check the relay, use a voltmeter.

Place one lead of voltmeter to Circuit 1 terminal block

(neutral) and the other lead of voltmeter to terminal

1 of relay.

Thirty seconds after terminal

1 receives AC volts, move

voltmeter lead to terminal

2 of relay. AC volts should be

present.

CHANGEOVER THERMOSTATCHANGEOVER THERMOSTAT

CHANGEOVER THERMOSTAT

14F. RELAY

A.A.

Relay, SPST (single pole/single throw) is used onRelay, SPST (single pole/single throw) is used on

Relay, SPST (single pole/single throw) is used on

Models 39224.601 and 39424.601.Models 39224.601 and 39424.601.

Models 39224.601 and 39424.601.

On Model 39224.601, it is used to complete the 115 volt AC

circuit to the compressors, high fan and low fan. On Model

39424.601, it is used to complete 115 volt AC to the

reversing valves for Circuit 1 and Circuit 2.

The relay has a DC volt coil. The coil terminals are 1 and

3. When the coil is NOT energized (no power to terminals

1 and 3), no continuity will exist between terminals 4 to 2.

When the coil is energized (power to terminals 1 and 3),

continuity will exist between terminals 4 to 2.

B.B.

Relay, SPDT (single pole/double throw) is used onRelay, SPDT (single pole/double throw) is used on

Relay, SPDT (single pole/double throw) is used on

Models 39325.XXX and 39335.XXXModels 39325.XXX and 39335.XXX

Models 39325.XXX and 39335.XXX.

On Model 39325.XXX it is used to complete the 115 volt AC

circuit to the reversing valve.

On Model 39335.XXX is used to complete the 115 volt AC

circuit to the reversing valve and to the furnace blower relay

coil. The relay has a DC volt coil.

Terminals 1 and 3 are the coil terminals. When the coil

(terminals 1 and 3) is NOT energized (no power to termi-

nals 1 and 3), continuity should exist between terminals 4

to 5; and no continuity between terminals 2 to 4.

When the coil (terminals 1 and

3) is energized (power to termi-

nals 1 and 3), continuity should

exist between terminals 2 to 4

and no continuity between ter-

minals 4 to 5.