York P2LBX16F14501, P3DHX12F08001, P2DHX16F12001, P4LBX20F19001 Table C-2 R7184 Troubleshooting

Page 23

TABLE C-2: R7184 TROUBLESHOOTING

Condition: Burner motor does not start when there is a call for heat.

Procedure

Status

 

Corrective Action

1. Check that limit switches are

 

 

 

closed and contacts are

N/A

 

N/A

clean. This includes the

 

 

 

 

burner motor reset button.

 

 

 

 

 

 

 

2. Check for line voltage power

 

 

 

at the oil primary control.

 

 

 

Voltage should be 120 Vac

N/A

 

N/A

between the black and white

 

 

 

 

lead wires on the oil primary

 

 

 

control.

 

 

 

3. Check indicator light with

Indicator light is on.

Cad cell is defective, sees external light, or connections

burner off, no call for heat (no

have shorted. Go to step 4.

 

flame).

Indicator light is off.

Go to step 5.

 

Indicator light turns off.

Eliminate external light source or permanently shield cad

 

cell.

 

 

 

 

 

 

•

Replace cad cell with new cad cell and recheck.

4. Shield cad cell from external

 

•

If indicator light does not turn off, remove yellow

 

 

leadwires from R7184 and recheck.

light.

Indicator light stays on.

 

•

If indicator light is still on, replace the R7184

 

 

 

 

control.

 

 

•

If the indicator light turns off, replace cad cell

 

 

 

bracket assembly.

 

 

Trouble is in thermostat circuit. Check thermostat wiring

 

Burner starts.

connections.

5. Jumper thermostat (T -T)

If connections are clean and tight, check thermostat wires

 

 

for continuity.

terminals on R7184

 

 

 

•

Disconnect line voltage power and open line

 

 

 

switch.

IMPORTANT

 

•

Check all wiring connections.

First remove one thermostat lead

Burner does not start.

•

Tighten any loose connections and recheck.

wire.

 

•

If burner still doesn't start, replace R7184

 

 

 

 

 

If burner still doesn't start, check the oil burner motor. It

 

 

may be seized or burned out.

Condition: Burner starts then locks out on safety with indicator light flashing at 1 Hz rate (½ second on, ½ second off)

 

Procedure

Status

Corrective Action

1.

Check that the limit switches

- - -

- - -

 

are closed and contacts are

 

clean.

 

 

2.

Check for line voltage power

 

 

 

at the oil primary control.

- - -

- - -

 

Voltage should be 120 vac

 

 

 

 

(nominal)

 

 

3.

Check indicator light with

Indicator light is on.

Cad cell or controller is defective, sees external light, or

 

burner off, no call for heat (no

connections are shorted. Go to step 4.

 

 

 

flame).

Indicator light is off.

Go to step 5.

 

 

 

 

Continues on next page

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Contents Contents Installation ManualLocation of Unit IntroductionHeat Loss NON-SUSPENDED Installation DOWN-FLOW Installation Horizontal InstallationChimney Venting Suspended InstallationAIR Conditioning Combustion AIRDraft Regulator Control Common Chimney ProblemsElectrical Connections Piping InstallationMinimum Chimney Base Temperatures F OIL TankJust the Blower Speed Neutral Wire normally the white wire is Never Moved to ADCirculating AIR Blower OIL Burner SET-UP ProcedureOIL Burner Burner ElectrodesSmoke Test Note Furnace Installation SET-UPStack Temperature Operating Instructions Maintenance and ServicePressure Rate Plate Table A-1 Beckett OIL Burner SET-UPBTU/Hr DelavanOutput Motor Blower SET-UP Cooling Capacity Furnace Table A-2 Direct Drive Blower SET-UPTable A-3 Belt Drive Blower SET-UP Model FLA Table A-4 Direct Drive Blower CharacteristicsTable A-5 Belt Drive Blower Characteristics Furnace Motor Temp CFM Blower Rise SpeedGeneral Dimensions P2LBX16F14501 General Dimensions P4LBX20F19001 General Dimensions P3DHX12F08001 General Dimensions P2DHX16F12001 Page Page Thermostat calls for heat R7184 Detailed Sequence of OperationOperation Preliminary Steps R7184 LED Diagnostic LightR8184N Notes Table C-2 R7184 Troubleshooting But Control locks out and starts Before Oil Problem Possible Cause Remedy Table C-3 System and General TroubleshootingLow oil pump pressure Check stack temperature. Stack temperatures will normally P3DHX Series Downflow Configuration Notes P4LBX20F19001 Assembly NotesP3DHX12F08001 Vestibule KIT Repair Part List P3DHX12F08001A Repair Part List P2DHX16F12001A Repair Part List P2LBX16F14501A Repair Part List P4LB Series Replacement Part Contact Information Page Unitary 5005 Norman Products York Group Drive 73069

P4LBX20F19001, P2DHX16F12001, P3DHX12F08001, P2LBX16F14501 specifications

The York P2LBX16F14501, P3DHX12F08001, P2DHX16F12001, and P4LBX20F19001 are high-performance HVAC units designed to meet diverse heating and cooling needs in both residential and commercial environments. These models are notable for their energy efficiency, advanced technologies, and user-friendly features.

The York P2LBX16F14501 is particularly known for its advanced inverter-driven scroll compressors that offer precise temperature control, enhanced efficiency, and significant noise reduction. This model is equipped with a multi-speed blower that helps maintain consistent airflow while ensuring optimum comfort levels. Its compact design allows for flexible installation options, making it suitable for various applications.

In contrast, the York P3DHX12F08001 focuses on delivering robust heating solutions, incorporating a variable-speed fan motor designed for improved energy savings and optimal performance. This unit excels in environments with fluctuating temperature demands, providing reliable heating without sacrificing energy efficiency. With built-in diagnostics, maintenance becomes more manageable, allowing for timely interventions to prevent excessive downtime.

The York P2DHX16F12001 stands out with its dual-fuel capability, allowing users to seamlessly switch between gas and electric sources depending on the prevailing energy costs. This versatility not only ensures year-round comfort but also offers substantial savings on energy bills. The model's high SEER (Seasonal Energy Efficiency Ratio) rating is indicative of its capability to deliver cooling efficiently during peak summer months.

Lastly, the York P4LBX20F19001 is designed for larger spaces, featuring a higher capacity that makes it ideal for commercial applications. This unit leverages advanced refrigerant technologies, enabling it to operate effectively across a wider range of temperatures. Its intelligent control systems can be integrated with building management systems, providing real-time monitoring and remote access to ensure peak operational efficiency.

All four models share a commitment to sustainable design and longevity, integrating modern materials that enhance durability and reduce the environmental footprint. Each unit is engineered with user comfort and energy efficiency in mind, representing York's dedication to innovation and quality in the HVAC industry.
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