REPAIR PART KIT INSTALLATION INSTRUCTIONS

REPLACEMENT DEMAND DEFROST CONTROL BOARD S1-33101975102

FOR USE WITH MODELS: 12, 13 & 14 SEER HEAT PUMPS

INSTALLATION

1.Power off unit totally - 240V & 24V.

2.Carefully record positions and colors of wiring removed.

3.Remove old defrost circuit board.

4.Install replacement circuit board - utilizing same placement, mounting & screws.

5.Refer to unit Installation Manual or Table 1 below - and set the Demand Defrost Curve Selection Jumper to the proper position. For the new jumper setting to take effect - all 24V power to the board must be removed and reapplied.

6.Complete the installation and power up the unit, re-apply- ing both 240V & 24V.

HEATER LIMIT SWITCH

CONTACTOR

(Not on all Units)

 

 

DEFROST

START RELAY

CONTROL

(Not on all Units)

BOARD

DUAL

RUN/FAN

CAPACITOR

START

 

 

CAPACITOR

 

LOW

(Not on all Units)

 

 

VOLTAGE

 

 

 

 

BOX

GROUND

REVERSIBLE HIGH

“FINGERED”

LUG

BUSHING

 

VOLTAGE CONDUIT PLATE

 

DEMAND DEFROST CURVE SELECTION JUMPER

X/L R C Y O W W1/66

PTEST

1

2

3

4

X/L

R

C

Y

O

W

W1/66

REV PRESSURE

VALVE SWITCH M

COIL

COIL G

AMBG

AMBIENT

HIGH

COND

VOLTAGE

FAN

FIGURE 1: Outdoor Unit Control Box

DEFROST CURVE SELECTION

When the control board is replaced, the jumper MUST be placed in a numbered position. Select the proper jumper posi- tion from Table1. If the jumper is missing or in the P posi- tion, the replacement control will not energize the compressor.

When the jumper position is changed, the control will not act upon the jumper changes until the thermostat calls are de-ener- gized or power (24 VAC) to the control is cycled.

TABLE 1: Defrost Initiate Curves

FIGURE 2: Demand Defrost Control Module

The control will display the active defrost curve using the X/L terminal when the heat pump is operating in a defrost cycle that has been forced using the TEST inputs. For instance, the X/L output will be energized with two flashes when defrost curve 2 is active. The control only reads the jumper input when the Y and W thermostat inputs are de-energized.

Defrost Curve Selection

1

2

3

4

Jumper Position

 

 

 

 

14 Seer

2, 3, 4 Ton

2.5, 3.5 Ton

None

None

All Other Models

All

None

None

None

Subject to change without notice. Printed in U.S.A.

035-21270-001-A-0906

Copyright © by York International Corp. 2006. All rights reserved.

Supersedes: Nothing

Unitary

5005

Norman

Product

York

OK

Group

Drive

73069

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York S1-33101975102 installation instructions Repair Part KIT Installation Instructions, Defrost Curve Selection

S1-33101975102 specifications

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