Thermo Pride OH6FA072DV4 Bedienungsanleitung

MO-440

ECN 5587-MA 190812 Made IN USA

ECM OPERATION MANUAL

FOR USE WITH MODEL:

SINGLE STAGE 2-STAGE

OH6FA072DV4 OH6FX072DV4

OH8FA119DV

OD6F/RA072DV OD6F/RX072DV

OL6F/RA072DV OL6F/RX072DV

: IF YOU DO NOT FOLLOW THE SAFETY PRECAUTIONS ELOW AND IN THIS

MANUAL, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL

INJURY, OR LOSS OF LIFE.

DO NOT STORE OR USE GASOLINE OR OTHER FLAMMA LE VAPORS AND LIQUIDS IN THE

VICINITY OF THIS OR ANY OTHER APPLIANCE.

INSTALLATION AND SERVICE MUST E PERFORMED Y A QUALIFIED INSTALLER, SERVICE

AGENCY OR THE GAS SUPPLIER. (REFERRED TO IN THESE INSTRUCTIONS AS A QUALIFIED

HEATING CONTRACTOR).

PLEASE READ THESE INSTRUCTIONS PRIOR TO INSTALLATION, INITIAL FIRING, AND EFORE

PERFORMING ANY SERVICE OR MAINTENANCE. THESE INSTRUCTIONS MUST E LEFT WITH

THE HOMEOWNER AND SHOULD E RETAINED FOR FUTURE REFERENCE Y QUALIFIED

SERVICE PERSONNEL.

THERMO PRODUCTS, LLC.

OX 237

DENTON, NC 27239

PHONE: 800-476-4328

All installations and services must be performed by qualified service personnel.

INDEX

SECTION BEGINNING PAGE

I. LOWER CONTROLLER INFORMATION 2

A. TERMINAL DEFINITIONS & FIELD WIRING 2

. WIRING & SWITCHES 3

C. INPUTS 6

D. OUTPUTS 6

E. OPERATING MODES 7

F. CFM TA LES 9

II. ECM TROU LESHOOTING 19

A. DIAGNOSTIC FEATURES 19

. GENERAL GUIDELINES TO TROU LESHOOTING GE ECM 20

C. TROU LESHOOTING CHARTS 23

All installations and services must be performed by qualified service personnel.

I. BLOWER CONTROLLER INFORMATION

A. TERMINAL DEFINITIONS & FIELD WIRING

urner Harness Connector P2

Pin 1 – Limit switch connection.

Pin 2 – 120 VAC Line connection.

Pin 3 – urner pilot contact.

Pin 4&5 – 120 VAC Neutral connection.

Pin 6 – urner pilot contact.

Pin 7&8 – From oil primary control.

Pin 9 – Limit Switch Input (LSI).

Field Wiring to urner

Pilot (Tstat) Neutral Line

Harness Wires Yellow Wires White Red

eckett Connections T-T terminals White lack

Riello Connections T-T terminals N L

Thermostat/Humidistat connections

"C" Common/ground

"W" Thermostat call for heat

"R" 24 VAC to thermostat

"G" Thermostat call for fan

"Y" Thermostat call for cool

“DEHUM” Humidistat call for dehumidification (TXV systems ONLY)

Thermostat/Humidistat connections for 2-Stage control

"C" Common/ground

"W1" Thermostat call for heat (low fire)

"W2" 24 VAC to thermostat (high fire)

“R” 24 vac to T-Stat

"G" Thermostat call for fan

"Y" Thermostat call for cool

“DEHUM” Humidistat call for dehumidification (TXV systems ONLY)

ECM control outputs

Pin 1 - Speed Common Pin 4 – lower Enable

Pin 2 - Speed Output Pin 5 – COOL Enable

Pin 3 – Motor CFM Pin 6 – “R” Output

Male quick connect terminals

“S1-3” 120 VAC Hot

“N1-7” 120 VAC Neutral

“EAC” Electronic Air Cleaner (120 VAC) connection.

"FAN" Fan On Signal

“X” 24VAC from transformer.

“C” 24VAC common from transformer.

"CC" Compressor Contactor

"CC_COM" Compressor Contactor Common

All installations and services must be performed by qualified service personnel.

B. WIRING & SWITCHES

: TURN OFF THE ELECTRICAL POWER to the furnace before attempting to

isconnect blower wiring.

OH6 / OH8 / OD6 /OL6

Single – Stage

Figure 1: Blower Wiring

All installations and services must be performed by qualified service personnel.

OH6 / OD6 / OL6

2 - STAGE

Figure 2: Blower Wiring

All installations and services must be performed by qualified service personnel.

Figure 3: Board Layout with Switches

All installations and services must be performed by qualified service personnel.

C. Inputs

Power supplies

Line voltage is applied between the "S1" and "N1" quick connect terminals.

24 VAC Class II Transformer secondary voltage supplied to X and C

Limit Switch

The 120VAC optically isolated limit switch input is connected on pin P2-1 & 9. Refer to the Heat

Mode section for the control operation.

Thermostat call for heat "W"

24 VAC thermostat input. A call for heat is recognized when the thermostat connects "W" to "R".

This input has an indicator LED that will light when the control receives a call for heat. Refer to the

Heat Mode section for the control operation.

Thermostat call for heat “W2”

24 VAC thermostat input. A call for heat is recognized when the thermostat connects "W2" to "R".

This input has an indicator LED that will light when the control receives a call for heat. Refer to the

Heat Mode section for the control operation.

Thermostat call for cool, "Y"

24 VAC thermostat input. A call for cooling is recognized when the thermostat connects "Y" to "R.

This input has an indicator LED that will light when the control receives a call for cooling. . Refer to

the Cool Mode section for the control operation.

Thermostat call for dehumidification "DEHUM”

24 VAC thermostat input. A call for dehumidification is recognized when the humidistat connects

"DEHUM" to "R". This input has an indicator that will light when the control receives a call for

dehumidification. Refer to the Cool Mode section for the control operation.

Thermostat call for fan "G"

24 VAC thermostat input. A call for fan is recognized when the thermostat connects "G" to "R". This

input has an indicator LED in that will light when the control receives a call for fan. Refer to the Fan

Mode section for the control operation.

D. Outputs

ECM Control

The control controls a multiple speed ECM motor through the 6-pin P3 connector. This connector

provides connection for ECM Speed common (Pin 1), Speed output (Pin 2), lower Enable (Pin 4),

Cool Enable (Pin 5) and “R” output (Pin 6).

Oil urner

Control

The control provides dedicated contacts to operate the T-T input of an oil primary control.

Rating shall be class 2 - 24 VAC pilot duty @ 24 VAC (< 200mA).

Power

The switched 120VAC power from the LIMIT switch passes through the board between Pins 1&2

of connector P1.

All installations and services must be performed by qualified service personnel.

Compressor contactor

The control provides switched 24VAC to operate a compressor contactor. Rating shall be class

2 - 24 VAC pilot duty @ 24 VAC (< 200mA).

EAC (electronic air cleaner)

The control provides a 120VAC output for an electronic air cleaner. This output is energized

whenever the fan motor is energized (either low, heat or cool speed). Connection is made via male

quick connect terminal labeled "EAC".

Humidifier

The control provides a 120 VAC output for a humidifier. Connections are made to a male quick

connect terminal labeled "FAN".

Status LED

A red LED is provided to indicate any thermostat input has been recognized by the microprocessor

on the control. See Diagnostic Features for a function description of operation.

Thermostat Input LEDs

Four green LEDs are placed beneath their respective thermostat connections (W, Y, G and DEHUM)

and operate whenever a call is present. See Diagnostic Features for a function description of

operation.

Motor CFM LED

This green LED will flash once for every 100CFM the blower is producing.

E. Operating Modes

Standby Mode

All outputs are off and the control is waiting for a thermostat demand. The thermostat inputs, and

limit switch are continuously monitored. The control initiates action when a thermostat call is

received or limit switch opens.

Fan Mode

A call for fan ("G") is received from the thermostat. If no other mode is calling for blower operation,

the control will choose a “Low” speed value from the position of DIP switch SW1 positions 4 through

6, as shown in the CFM Tables and operate the fan at that speed. The fan mode will be operated as

long as the "G" input is calling and neither the Heat mode nor the Cool mode is calling for blower

operation. When the Heat and Cool modes call for blower operation, their respective outputs will take

over after their respective turn-on time delays have expired. The speed Output is present until the

fan call is satisfied.

Cooling Mode

A call for cool ("Y") is received from the thermostat. If the heat mode is not active or the anti-short

cycle delay is not in effect, the control will energize the “CC” terminal. After a 10 second delay

blower ramps up to the “COOL” speed determined by the position of DIP switch SW1 (positions 4

through 6) determine a speed as shown in CFM Tables.

When the call for cool is satisfied, the “CC” terminal is de-energized and the cooling off delay of 45

seconds is started. Forty-five seconds later the blower speed ramps toward zero and the control

reverts to Standby Mode.

Dehumidification Operation

If a call for dehumidification is received while the Cool Mode is active, blower speeds will be

reduced. The speed value will be selected from the DEHUM column of the CFM Tables. This input

may only be used on systems using a thermostatic expansion valve (TXV) on the evaporator.

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