Thermo Pride OC2-56DE Operation Manual Download

Page: 18 / 21

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 – Driven Systems”.

Summary of Contents for OC2-56DE

Page 1: ...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 REF...

Page 2: ...SHIPPED SETTINGS 1 II BLOWER CONTROL INFORMATION 4 A TERMINAL DEFINITIONS FIELD WIRING 4 B WIRING SWITCHES 5 C INPUTS 9 D OUTPUTS 9 E OPERATING MODES 10 F CFM TABLES 12 G ECM SPECIFIC REPLACEMENT PAR...

Page 3: ...TION CFM 1000 1000 1000 3 SWITCH SELECTION CFM 1200 1200 1200 3 1 2 TON SWITCH SELECTION CFM 1400 1400 1400 HEATING HEATING HEATING 70deg SWITCH SELECTION CFM 737 1134 1335 APPROX TEMPERATURE RISE F 7...

Page 4: ...TION CFM 1000 1000 1000 924 3 SWITCH SELECTION CFM 1200 1200 1200 1276 3 1 2 TON SWITCH SELECTION CFM 1400 1400 1400 1474 4 TON 1600 HEATING HEATING HEATING HEATING 70deg SWITCH SELECTION CFM 737 1134...

Page 5: ...ION CFM 1200 1200 3 1 2 TON SWITCH SELECTION CFM 1400 1400 HEATING HEATING 70deg SWITCH SELECTION CFM 737 1134 APPROX TEMPERATURE RISE F 70 70 BLOWER MOTOR HP 1 2 1 2 NOZZLE SIZE 55 75 NOZZLE SPRAY AN...

Page 6: ...ostat 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 Stag...

Page 7: ...All installations and services must be performed by qualified service personnel 5 B WIRING SWITCHES HIGHBOY LOWBOY Figure 1 BLOWER WIRING...

Page 8: ...installations and services must be performed by qualified service personnel 6 TURN OFF THE ELECTRICAL POWER to the furnace before attempting to disconnect blower wiring COUNTERFLOW Figure 2 BLOWER WIR...

Page 9: ...tallations and services must be performed by qualified service personnel 7 TURN OFF THE ELECTRICAL POWER to the furnace before attempting to disconnect blower wiring OH5 85 DXE 2 STAGE Figure 3 BLOWER...

Page 10: ...lations and services must be performed by qualified service personnel 8 TURN OFF THE ELECTRICAL POWER to the furnace before attempting to disconnect blower wiring Figure 2 BOARD LAYOUT WITH SWITCHES B...

Page 11: ...oling 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 oper...

Page 12: ...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 co...

Page 13: ...the burner is brought on They will continue at that speed until the delay time has elapsed The control remains in steady heat mode until the thermostat is satisfied When the call for heat signal is re...

Page 14: ...s F CFM TABLES The following tables contain blower speed settings and their respective air flowrates for the ECM blower motor To change air flowrates from that of the shipped settings use the respecti...

Page 15: ...r 350464 350464 350464 350464 350464 350464 III ECM TROUBLE SHOOTING A DIAGNOSTC FEATURES The control board is equipped with 4 green Input Status LEDs and 1 red Board Status LED These are intended to...

Page 16: ...motor for tight shaft Perform motor control replacement check Run Moisture Check Motor rocks but won t start Check for loose or compliant motor mount Make sure blower wheel is tight on shaft Perform...

Page 17: ...motor is bad Orient connectors down so water can t get in Install drip loops Locate connectors above 7 and 4 o clock positions Use authorized motor and control model s for replacement Replace one moto...

Page 18: ...ce personnel 16 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 S...

Page 19: ...TO MOTOR IF CONNECTIONS ARE GOOD AND MOTOR STILL DOES NOT RUN REPLACE MOTOR THIS GUIDE SHOULD BE USED IN THE CASE OF A STOPPED OR MANFUNCTIONED ECM BLOWER MOTOR THE FOLLOWING SHOULD HELP ESTABLISH THE...

Page 20: ...Status LED Off 1 HEAT mode On 2 BLOWER HEAT 3 Status LED Flashes 1 COOL mode On 2 Blower On Delay Started 3 Condenser On 4 Status LED On continuous 1 FAN mode On 2 BLOWER LOW 3 Status LED On continuo...

Page 21: ...Fire Connect 2 Stage T stat to both W1 and W2 Single Stage T stat W2 Connect single stage T stat to W2 only BLOWER Speeds HEAT The Heating Blower speed selected by positions 1 2 3 of SW1 CFM tables o...