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www.white-rodgers.com

www.emersonclimate.com

PART NO. 

37-7235A

1114

    

Provides Wireless Control for up to 

4

 Heat/

2

 Cool Heat Pump Stages 

or up to 

2

 Heat/

Cool Stages on Conventional Systems

1F98EZ-1621

 

Emerson® Blue™ Wireless Easy Install™

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY 
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE 
PERSONAL INJURY AND/OR PROPERTY DAMAGE.

INSTALLATION INSTRUCTIONS

Equipment Control

Module

Comfort Interface 

Remote Sensor
(outdoor location)

Model 

1F98EZ-1641

Includes Comfort/User Interface, Equipment Control 

and one Wireless Remote Sensor

Comfort Interface

Equipment Control

Module

Return Air Sensor

(RAS)

1F98EZ-1621

 will accept 

up to 

3

 remote sensors 

 

   

Optional Remote

Sensor(s) not included

[

[

Summary of Contents for 1F98EZ-1621

Page 1: ...INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATINGTHIS CONTROL COULD CAUSE PERSONAL INJURYAND OR PROPERTY DAMAGE INSTALLATION INSTRUCTIONS EquipmentControl Module Comfort Interface Remote Sensor ou...

Page 2: ...ctric Heat Only Cool Only or Heat Cool Systems 2 2 Heat Pump Single orTwo Compressor Systems with up to 2 Stages of Aux Em Heat 4 2 Heat Pump with Dual Fuel Single orTwo Compressor Systems with up to...

Page 3: ...in place Do not drill into critical furnace components Wall anchors and screws are provided for dry wall mounting 3 16 See next page for wiring 5 1 Remove the cover from the Equipment Control Module...

Page 4: ...HM Switch DHM Switch Outdoor Condenser A C or Heat Pump Y Y2 O B C if Heat Pump DHM DHM2 HM2 W E W2 Y Y2 G O B L HM Indoor Air Handler Furnace Connections Heat Stage 1 Indoor Unit or Furnace Conventi...

Page 5: ...BATTERIES INSTALLER QUICK REFERENCE Install batteries in the Comfort Interface Room Temperature Time of Day System Indicator Heat Button A C Button Setting Temperature Day ofWeek Fan Indicator Run Bu...

Page 6: ...10 0 1 On OFF 01 345 past 80 01 Selecting On energizes the DHM terminal s and fan terminal G when humidity is above the 6 from the heating and cooling system Note 7 Menu 8 11 0 1 ID Hum On OFF On 9 se...

Page 7: ...emperature 1o above or below room temperature The heating or cooling system should start 2 For staging systems run temperature 3o above or below room temperature Heat or Cool LED display will be indic...

Page 8: ...g two mounting screws J 1 Interface operation 6 Comfort Interface can be attached after checking operation LOCATEAND MOUNTCOMFORT INTERFACE 55 4 IMPORTANT 9 0 1 Wireless Devices see 1 Sub base Comfort...

Page 9: ...nt Control Module Required Remote Sensor 1 if installed Remote Sensor 2 if installed Outdoor Remote Sensor if installed Remote Sensor 3 if installed Return Air Sensor required 4 Press the Run button t...

Page 10: ...Interface Equipment Control Module is calling for cool Check for broken or shorted wire from Equipment Control Module to HVAC Equipment If LED is OFF or solid ON Comfort Interface not calling Check 2...

Page 11: ...delete 4 Press and hold the and buttons simultaneously to delete each device Press until the display shows the next device to delete 5 PresstheRun buttontoexitthemenu 3 5 1 Power the device 2 Go to a...

Page 12: ...demand signal is intermittent 2 Time delay or control board defective 3 If high pressure switch present go to Flash Code 2 information 4 If low pressure switch present go to Flash Code 1 information...

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