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ECM OPERATION MANUAL
OH5-85DE
OH11-105DE
OH2-56DE
OC5-85DE
: IF YOU DO NOT FOLLOW THE SAFETY PRECAUTIONS BELOW 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 FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF
THIS OR ANY OTHER APPLIANCE.
INSTALLATION AND SERVICE MUST BE PERFORMED BY 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 BEFORE
PERFORMING ANY SERVICE OR MAINTENANCE. THESE INSTRUCTIONS MUST BE LEFT WITH THE
HOMEOWNER AND SHOULD BE RETAINED FOR FUTURE REFERENCE BY QUALIFIED SERVICE
PERSONNEL.
MO-434
ECN 5647-MA 200813
FOR USE WITH MODELS:
OL5-85FDE
OL11-105FDE
OL2-56FDE
OC2-56DE
THERMO PRODUCTS, LLC.
BOX 237
DENTON, NC 27239
OL5-85RDE
OL11-105RDE
OL2-56RDE
OH5-85DXE
MADE IN USA
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Table of Contents
Troubleshooting
Related Manuals for Thermo Pride OH5-85DE
Summary of Contents for Thermo Pride OH5-85DE
- Page 1 ECM OPERATION MANUAL FOR USE WITH MODELS: OH5-85DE OL5-85FDE OL5-85RDE OH11-105DE OL11-105FDE OL11-105RDE OH2-56DE OL2-56FDE OL2-56RDE OC5-85DE OC2-56DE OH5-85DXE : IF YOU DO NOT FOLLOW THE SAFETY PRECAUTIONS BELOW AND IN THIS MANUAL, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE.
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Page 2: Table Of Contents
All installations and services must be performed by qualified service personnel. INDEX SECTION BEGINNING PAGE FURNACE SPECIFICATIONS (SHIPPED SETTINGS) BLOWER CONTROL INFORMATION A. TERMINAL DEFINITIONS & FIELD WIRING B. WIRING & SWITCHES C. INPUTS D. OUTPUTS E. OPERATING MODES F. CFM TABLES G. -
Page 3: Furnace Specifications (Shipped Settings)
All installations and services must be performed by qualified service personnel. I. FURNACE SPECIFICATIONS (SHIPPED SETTINGS) OL SERIES MODEL NO. OL2-56 OL5-85 OL11-105 HEAT INPUT RATE IN BTU/HR 70,000 106,250 126,000 HEATING CAPACITY IN BTU/HR 56,000 85,000 101,000 34-3/4” 43-1/4” 46-1/2”... - Page 4 All installations and services must be performed by qualified service personnel. OH SERIES MODEL NO. OH5-85 OH11-105 OH5-85DXE 85,000 HEAT INPUT RATE IN BTU/HR 70,000 106,250 126,000 106,250 HEATING CAPACITY IN BTU/HR 74,000 56,000 85,000 101,000 85,000 52” 56” 59-1/2” 56”...
- Page 5 All installations and services must be performed by qualified service personnel. OC SERIES MODEL NO. OC2-56 OC5-85 HEAT INPUT RATE IN BTU/HR 70,000 106,250 HEATING CAPACITY IN BTU/HR 56,000 85,000 HEIGHT OF CASING 57-1/2” 56” WIDTH OF CASING 19” 24” DEPTH OF CASING 27”...
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Page 6: Blower Control Information
All installations and services must be performed by qualified service personnel. BLOWER CONTROLLER INFORMATION A. TERMINAL DEFINITIONS & FIELD WIRING Burner Harness Connector P1 Pin 1 – Limit switch connection. Pin 2 – 120 VAC Line connection. Pin 3 – Burner pilot contact. -
Page 7: Wiring & Switches
All installations and services must be performed by qualified service personnel. B. WIRING & SWITCHES HIGHBOY/LOWBOY Figure 1: BLOWER WIRING... - Page 8 All installations and services must be performed by qualified service personnel. : TURN OFF THE ELECTRICAL POWER to the furnace before attempting to disconnect blower wiring. COUNTERFLOW Figure 2: BLOWER WIRING...
- Page 9 All installations and services must be performed by qualified service personnel. : TURN OFF THE ELECTRICAL POWER to the furnace before attempting to disconnect blower wiring. OH5-85 DXE 2-STAGE Figure 3: BLOWER WIRING...
- Page 10 All installations and services must be performed by qualified service personnel. : TURN OFF THE ELECTRICAL POWER to the furnace before attempting to disconnect blower wiring. BLOWER Figure 2: BOARD LAYOUT WITH SWITCHES...
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Page 11: Inputs
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 &... -
Page 12: Operating Modes
All installations and services must be performed by qualified service personnel. The switched 120VAC power from the LIMIT switch passes through the board between Pins 1&2 of connector P1. Compressor contactor The control provides switched 24VAC to operate a compressor contactor. Rating shall be class 2 - 24 VAC pilot duty @ 24 VAC (<... - Page 13 All installations and services must be performed by qualified service personnel. 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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Page 14: Cfm Tables
All installations and services must be performed by qualified service personnel. Six dip switches select Speed values for heat, cool, fan and dehumidification blower speeds (see the CFM Tables). Blower On and Off Delays Four Heat blower on and four blower off delays are selected by two dip switches for each function. Refer to Table 1 for specific delay values. -
Page 15: Ecm Specific Replacement Parts
All installations and services must be performed by qualified service personnel. OH5 2-STAGE OH5 2-STAGE HIGH FIRE LOW FIRE SETTING TONS COOL SETTING RISE RISE 6 OFF 5 OFF 3 OFF 4 ON 2 ON 1008 1 OFF 6 OFF 3 OFF 5 OFF 2 ON... -
Page 16: General Guidelines To Troubleshooting Ge Ecm
All installations and services must be performed by qualified service personnel. The red Board Status LED has two functions: It will light when the board recognizes a valid input signal and will stay lit until all valid signals are removed. This is intended to show that the board is functioning and able to respond to input signals. - Page 17 All installations and services must be performed by qualified service personnel. Check for Triac switched t’stat or solid state relay Excessive noise Determine if it’s air noise, cabinet, duct or motor noise – interview customer, if necessary Noisy blower or cabinet ...
- Page 18 All installations and services must be performed by qualified service personnel. Low static pressure for lowest noise Set low continuous-fan CFM T’stat in bad location? Figure 3: ECM PIN CONNECTORS Troubleshooting table above and Figure 2 adapted from GE Industrial Systems publication GED-7161C, “Troubleshooting GE ECM –...
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Page 19: Troubleshooting Charts
All installations and services must be performed by qualified service personnel. C. TROUBLESHOOTING CHARTS THIS GUIDE SHOULD BE USED IN THE CASE OF A STOPPED OR MANFUNCTIONED ECM BLOWER MOTOR. THE FOLLOWING SHOULD HELP ESTABLISH THE TYPE OF MALFUNCTION OR DEVIATION FROM THE NORMAL BLOWER OPERATION. TO USE THIS DIAGRAM, YOU JUST NEED TO FOLLOW THE INSTRUCTIONS IN THE BOXES. - Page 20 All installations and services must be performed by qualified service personnel. Sequence of Operation BLOWER Off- Delay Active? HEAT On-Delay LIMIT Mode On? Ended? Active? Active? 1.BURNER Off BURNER On 2. HEAT mode Off 3. BLOWER Off-Delay Started 4. Status LED Off DEHUM COOL On-Delay...
- Page 21 All installations and services must be performed by qualified service personnel. Sequence of Operation Glossary Inputs: LIMIT - 120vac power from the High Limit Switch used to power the burner. W- Switched 24vac indicating a Heat call from the thermostat. Y - Switched 24vac indicating a Cool call from the thermostat.
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