Models: HA24BB, RB, WB
Temperature Control: Electro-mechanical
Defrost Style: Off cycle defrost
Cabinet Lighting: Lights are controlled through a manual on/off switch as well as
through the door switch.
Evaporator Fan: Is controlled by the door switch during Cooling Mode
LOAD
COOLING MODE
OFF MODE
DEFROST MODE
Compressor
Energized
De-Energized
N/A
Condenser Fan
Energized
De-Energized
N/A
Evaporator Fan
Energized
De-Energized
N/A
Models: HA24FB
Electronic Control: Dixell (XR60CX)
Defrost Style: Hot Gas Defrost
Cabinet Lighting: Lights are controlled through a manual on/off switch as well as
through the door switch.
Evaporator Fan: Is controlled by the door switch during Cooling Mode
LOAD
COOLING MODE
OFF MODE
DEFROST MODE
Compressor
Energized
De-Energized
Energized
Condenser Fan
Energized
De-Energized
De-Energized
Evaporator Fan
Energized
De-Energized
De-Energized
Hot Gas Solenoid Valve
De-Energized
De-Energized
Energized
Models: HB24BS, RS, WS
Temperature Control: Electro-mechanical
Defrost Style: Off cycle defrost
Cabinet Lighting: Lights are controlled through a manual on/off switch as well as
through the door switch.
LOAD
COOLING MODE
OFF MODE
DEFROST MODE
Compressor
Energized
De-Energized
N/A
Condenser Fan
Energized
De-Energized
N/A
Evaporator Fan
Energized
De-Energized
N/A
Return to
Residential Refrigeration
and Front Venting Commercial Refrigeration
Service Manual
Load Operation Modes
Table 8-2. HA24BB, RB, WB Load Operation Modes
Table 8-3. HA24FB Load Operation Modes
*Defrost is elapsed time initiated and terminated (See controller programs)
**Fan motors are off after defrost (see controller programs)
Table 8-4. HB24BS, RS, WS Load Operation Modes
Electrical System Repair Instructions
Page 8-18