Ducane (HVAC) (2/4)SH13 warranty Blower Speed Chart, Diagnostic Display

# 48369K005

BLOWER SPEED CHART

Unit	Fact ory Shipped
	Set t ings
Cooling Input	(BLK)
24	LOW
30	MED
36	HIGH
42	LOW
48	MED
60	HIGH

DIAGNOSTIC DISPLAY

Mode	Green LED (DS2)	Red LED (DS1)
No Power to Board	Off	Off
Normal Operation/ Power to Board	Simultaneous Slow Flash
Anti-Short Cycle Lockout	Alternating Slow Flash
Low Pressure Switch Fault	Off	Slow Flash
Low Pressure Switch Lockout	Off	On
High Pressure Switch Fault	Slow Flash	Off
High Pressure Switch Lockout	On	Off

Note: Because the pressure switches are monitored only when "Y1" (Input) is active, the code for
pressure switch open will not be seen when "Y1" is off. Instead, the “Normal Operation" or
“Anti-Short Cycle Lockout” code will be seen.	THERMOSTAT

Figure 9

Page 11

Wiring Diagram

P/N 48349-001

When a pressure switch opens and causes a short cycle lockout, the pressure

S1

switch-open code will be seen until it closes, then the short cycle lockout code

MOTOR

will flash unless it has already expired.

SPEED TAPS

BLK

W1 & W2 CAN BE USED TO STAGE ELECTRIC HEAT

P-3

ACCESSORY ON 15 & 20KW MODELS.

L MHC

NO

NC

RED

BLK

5, 7.5, & 10KW HEATER ACCESSORIES FUNCTION

P-1

RED

OFF W1 ONLY.

C

L1

A15

BLK

208V

240V

BLOWER

GRN

CONTROL

L1 K1-1

SEE CHART

P-6

COMPRESSOR

FOR WIRING

CMC1

CONTACTOR

24V

BLKC

NC

C

BLK

CAPACITOR

BLOWER

TRANSFORMER

RED

BLU

LO-PS 2

L

S

T1

BLK

CONTACTOR YEL

FAN

DEFROST

B3

T1

K1

DUAL

CONTROL

C4 H

M

L

REVERSING

CAPACITOR

BRN

C

VALVE

O-OUT

W1

208/230V-1-60

C12

F

INDOOR

L1

C

PUR

MOTOR

DEFROST

R

B1

R

C

T'STAT

DF

YEL

XFMR-R

R

YEL

BLU

S6

Y1 OUT

Y1

FUSE

COMPRESSOR

COMMON 24 V

O

RED

H

XFMR-C

CONDENSER

G

BLU

S4

HI-PS 2

C

HIGH PRESSURE

CMC1

RED

FAN MOTOR

T2

B4

WHT

A15

SWITCH

DEFROST CONTROL

(IF USED)

BLOWER

BLU

BLU

COMPRESSOR

CONTROL

CONNECTION MUST BE JUMPERED

2

L2 CONTACTOR

WHEN PRESSURE SWITCH IS NOT USED.

K1-2

LINE VOLTAGE FIELD INSTALLED.

L2

P-2

P-4

G W1 C R O Y W2

P-5

WHT

WHT

BLU

RED

ORN

YEL

NOTE:

IF ANY OF THE ORIGINAL WIRE IS REPLACED THE SAME SIZE AND TYPE WIRE MUST BE USED. USE COPPER CONDUCTOR ONLY, MIN 75°C WIRE.

WARNING-

ELECTRIC SHOCK HAZARD. UNIT MUST BE GROUNDED IN ACCORDANCE WITH NATIONAL AND LOCAL CODES.