Sears EF12F1900A2 Sequence, Operation, Heat Only, Cooling Only Unit With Electric Heat

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I Blower Coils

Mode

Constant Blower Fan Switch ON)

Thermostat calls for Heat

Sequence

Thermostat

to Con-

 

trol Board

24 volt

State

J

 

Control

 

 

 

 

Electric

G

 

On

 

 

Off

G&W1

&W2

On

 

 

Off

Installation Instructions

Of Operation

Control Function

Heat Only

Fan On.

Fan Off.

Fan On, 1st Stage Of Heat On, then 2nd Stage Of Heat On.

2nd thenlst Stage Of Heat Off. 6 sec delay, then Fan Off.

Cooling Only Unit With Electric Heat

Constant Blower Fan Switch ON)

Cooling Only Unit (Thermostat calls for

Cooling)

Cooling Only Unit (Thermostat calls for Heat)

G

On

 

Off

Y&G

On

 

Off

G&W1 &W2

On

 

Off

Fan On.

Fan Off.

Compressor On, Fan On.

Compressor Off, 60 Second Delay - Then Fan Off.

Fan On, 1st Stage Of Heat On, then 2nd Stage Of Heat On.

2rid thenlst Stage Of Heat Off. 6 sec delay, then Fan Off.

Heat Pump With Electric Heat

Heat Pump

Y&G&O

On

Compressor

On, Reversing

Valve

Energized,

Fan On.

(Thermostat

calls for

Off

Compressor

Off, 60 Second

Delay

And Then

Fan Off.

Cooling)

 

Heat Pump

Y & G

On

Compressor

On, Fan On

 

 

 

(Thermostat

calls for

 

 

 

 

 

 

Heat)

 

 

 

 

 

 

 

Heat Pump cannot

Y & G & Wl & W2

On

maintain proper temp.

 

 

Electric

Heat

Tempera-

 

Off

ture satifised

 

 

 

Heat Pump

 

Y&G&O&WI&W2

On

(Goes

into Defrost

 

 

Mode)

 

 

 

Off

 

 

 

 

Heat Pump

 

Y&G

Off

Room

temp.

satifised)

 

 

Heat Pump

 

G&W1 &W2

On

(Emergency

Heat)

 

Off

 

 

 

 

1st Stage Of Heat On, then 2nd Stage Of Heat On

2rid then 1st Stage Of Heat Off

Reversing valve switches unit to cooling, 1st Stage Of Heat On, then 2nd Stage Of Heat On

Reversing valve switches back to heating, 2rid then 1st Stage Of Heat Off

Compressor Off, 60 Second Delay And Then Fan Off.

Fan On, 1st Stage Of Heat On, then 2nd Stage Of Heat On. 2rid then 1st Stage Of Heat Off. 6 sec delay, then Fan Off.

NOTE: Electric Heat Elements are controlled by relays with a delay sequence from the logic board to provide sequencing between elements.

Limit Operation

The temperature limit responds to over-temperature conditions in the air duct. Ifthetemperaturelimittrips, theelectricheaterrelayswill

be de-energized and the fan relay will be energized. Once the limit resets, the control will resume normal operation. If the limit trips four times during a single call for heat, the control will go into a 1 hour soft lockout. During the soft lockout, the fan relay will respond to thermostat inputs but the heater relays are disabled. If the control detects a limit trip du ring the soft lockout, the control will go into a hard lockout. Once in a hard lockout, the fan relay is locked on and the heater relays are disabled. Turning the power to the unit off and then on will clear this state.

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Contents Safety Labeling and Signal Words Accessory No Heat KitWith EF08B1500A3 EF12F1900A2 EF16J2200A2 EF20N2600A2Installation Instructions Electric Furnace Downflow InstallationsGeneral Information LocationHorizontal Left and Right Installations Non-Ducted Return Air Closet InstallationCondensate Drain Filter InstallationRefrigerant Line Connections SpecialNote For Downflow InstallationsRestrictor Orifice Selection Electric HeatInstall No Heat Kit Electrical WiringOvercurrent Protection No Heat Kit Technical Data Electrical Heaters & Operating ControlsAir Flow Check MaintenanceModel Installation Instructions Electric FurnaceElectric SequenceOperation Heat Only15 Kw 10 Kw20 Kw 25 KwReplacementParts PANEL, FILL-IN Description

EF16J2200A2, EF20N2600A2, EF12F1900A2, EF08B1500A3 specifications

The Sears EF08B1500A3, EF16J2200A2, EF12F1900A2, and EF20N2600A2 represent a series of innovative and efficient electric heaters designed for various residential and commercial heating needs. Each model comes with unique features and technologies, tailored to provide comfort and convenience to users.

The EF08B1500A3 is a compact yet powerful electric heater, capable of producing up to 1500 watts of heating power. Its lightweight design makes it easy to move around, making it an excellent choice for individual room heating. Equipped with adjustable thermostat controls, users can set their preferred temperature, ensuring optimal comfort while minimizing energy consumption. The unit also features a safety tip-over switch and overheat protection, ensuring worry-free operation.

The EF16J2200A2, on the other hand, has a higher wattage, delivering up to 2200 watts of heating power, making it suitable for larger spaces. This model incorporates advanced heating elements that provide rapid heating, allowing users to warm up a room swiftly. A digital display with remote control functionality is included, offering enhanced convenience and control over the heating process. Like its counterpart, it also features safety mechanisms such as a programmable timer and an automatic shut-off system.

The EF12F1900A2 is designed with durability in mind, featuring a robust housing that can withstand frequent use. This model operates at 1900 watts and includes multiple heating settings, providing flexibility based on the specific heating needs of a space. Its quiet operation ensures minimal disruption, making it ideal for bedrooms and offices. This model also incorporates energy-efficient technology to help reduce electricity bills while ensuring consistent heating performance.

Lastly, the EF20N2600A2 stands out with its impressive 2600 watts of heating power, suitable for large open areas or professional settings. It features a unique fan-assisted heating mechanism that helps distribute warmth evenly throughout a space. Users will appreciate the intuitive control panel that enables easy adjustments and scheduling. Safety features such as reinforced power cords and a protective mesh cover enhance its overall reliability.

In summary, the Sears EF series of electric heaters—EF08B1500A3, EF16J2200A2, EF12F1900A2, and EF20N2600A2—offers a range of models equipped with advanced technologies, safety features, and efficient heating capabilities, making them suitable for a variety of settings and user needs.