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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), Blower Enable (Pin 4), Cool 
Enable (Pin 5) and “R” output (Pin 6). 

 

Oil Burner 

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 

Summary of Contents for OL11-105FDBE

Page 1: ...DS 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 QUALIFIE...

Page 2: ......

Page 3: ...I BLOWER CONTROL INFORMATION 1 A TERMINAL DEFINITIONS FIELD WIRING 1 B WIRING SWITCHES 2 C INPUTS 4 D OUTPUTS 4 E OPERATING MODES 5 F CFM TABLES 7 G ECM SPECIFIC REPLACEMENT PARTS 8 III ECM TROUBLESH...

Page 4: ...mostat 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 Sta...

Page 5: ...All installations and services must be performed by qualified service personnel 2 B WIRING SWITCHES OL11 OL16 LOWBOY Figure 1 BLOWER WIRING...

Page 6: ...lations and services must be performed by qualified service personnel 3 TURN OFF THE ELECTRICAL POWER to the furnace before attempting to disconnect blower wiring Figure 2 BOARD LAYOUT WITH SWITCHES B...

Page 7: ...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 8: ...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...

Page 9: ...d low fire is activated for 15 minutes If a call for heat still exists high fire will be activated and will continue until the demand for heat has been satisfied Counterflow units in addition will run...

Page 10: ...es their tabular values are enacted when their function is called Three additional dip switches select 8 heating speeds which are enacted when heat is called This allows independent selection of heati...

Page 11: ...rness 350271 350271 Transformer 350464 350464 Power Choke 350855 COOLING SPEEDS HEATING SPEEDS TEMPERATURE RISE F Rise CFM COOL LOW DEHUM 3 ON 6 OFF 2 OFF 5 OFF 1 OFF 4 OFF 3 ON 6 OFF 2 OFF 5 OFF 1 ON...

Page 12: ...servicing motor Wait at least 5 minutes after disconnecting power before opening motor SYMPTOM CAUSE PROCEDURE Motor rocks slightly when starting This is normal start up for ECM Motor won t start No...

Page 13: ...moving panel or filter reduce puffing Reduce restriction Reduce max airflow Evidence of Moisture Motor failure or malfunction has occurred and moisture is present Replace motor and perform Moisture Ch...

Page 14: ...rain plugged Check for low airflow too much latent capacity Check for undercharged condition Check and plug leaks in return ducts cabinet Comfort Check Check proper airflow settings Low static pressur...

Page 15: ...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 16: ...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 17: ...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...

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