York P2DHX16F12001 Table C-3 System and General Troubleshooting, Problem Possible Cause Remedy

Page 25

Table C-2: R7184 Troubleshooting continued from previous page

Procedure

 

 

 

 

 

Status

Corrective Action

10.

Check cad cell.

 

 

 

Indicator light is on.

Remount control onto burner housing. Go to step 6.

•

Disconnect

line

voltage

 

 

 

 

 

power and open line switch.

 

 

•

Remove existing cad

cell

 

 

 

and replace with new cad

 

 

 

cell.

 

 

 

 

 

 

 

•

Disconnect

all

wires

from

 

 

 

thermostat

terminals to en-

Indicator light is off.

Go to step 11.

 

sure that there is no call for

 

 

 

 

heat.

 

 

 

 

 

 

 

•

Reconnect

line

voltage

 

 

 

power and close line switch.

 

 

•

Expose new cad cell to

 

 

 

bright light such as a flash-

 

 

 

light.

 

 

 

 

 

 

 

11.

Check cad cell bracket as-

Indicator light is on.

Replace cad cell bracket assembly.

 

sembly.

 

 

 

 

 

 

 

 

 

 

 

 

 

•

Disconnect

line

voltage

 

 

 

power and open line switch.

 

 

•

Remove cad cell wires from

 

 

 

quick

connect

connectors

 

 

 

on the

and leave

control

Indicator light is off.

Replace R7184.

 

leadwires open.

 

 

 

 

 

•

Apply power to device.

 

 

 

•

Place

jumper

across

cad

 

 

 

cell terminals

after

burner

 

 

 

motor turns on.

 

 

 

 

 

NOTE: Restricted Mode - (Limited Reset): In order to limit the accumulation of unburned oil in the combustion chamber, the con- trol can be reset only 3 times, after which, the control locks out. The reset count returns to zero each time a call for heat is successfully completed.

To reset from RESTRICTED MODE: press and hold the reset button for 30 seconds. When the LED flashes twice, the de- vice has reset.

NOTE: Disable function: Pressing and holding the reset button will disable all functions until the button is released. The burner will restart at the beginning of the normal heat cycle on SAFETY CHECK.

TABLE C-3: SYSTEM AND GENERAL TROUBLESHOOTING

Problem

Possible Cause

Remedy

 

 

 

 

Thermostat not calling for heat.

Check thermostat and adjust. Also, check thermostat for accu-

 

racy; if it is a mercury switch type, it might be off level.

 

 

 

 

Check furnace switch, main electrical panel furnace fuse or cir-

 

No power to furnace.

cuit breaker. Also look for any other hand operated switch, such

 

as an old poorly located furnace switch, which was not removed

 

 

 

 

during furnace replacement.

Furnace will not start.

 

 

Thermostat faulty.

Remove thermostat wires from oil primary control terminals T-T.

 

Place a jumper across T-T. If furnace starts, replace thermostat,

 

 

thermostat sub-base (if equipped), or both.

 

 

Check reset button on oil primary control. Remove thermostat

 

Oil primary control faulty.

wires from oil primary control terminals T1 - T2. Check for 24v

 

across T -T. If no voltage is present, check for 115v to oil pri-

 

 

 

 

mary control. If 115v is present, go to Table C-2.

Continues on next page

 

 

25

 

 

Page 24 Page 26
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Page 24 Page 26
Contents Contents Installation ManualHeat Loss IntroductionLocation of Unit NON-SUSPENDED Installation DOWN-FLOW Installation Horizontal InstallationAIR Conditioning Suspended InstallationCombustion AIR Chimney VentingDraft Regulator Control Common Chimney ProblemsMinimum Chimney Base Temperatures F Piping InstallationOIL Tank Electrical ConnectionsCirculating AIR Blower Neutral Wire normally the white wire is Never Moved to ADJust the Blower Speed OIL Burner ProcedureBurner Electrodes OIL Burner SET-UPStack Temperature Furnace Installation SET-UPSmoke Test Note Operating Instructions Maintenance and ServiceBTU/Hr Table A-1 Beckett OIL Burner SET-UPDelavan Pressure Rate PlateTable A-3 Belt Drive Blower SET-UP Table A-2 Direct Drive Blower SET-UPOutput Motor Blower SET-UP Cooling Capacity Furnace Table A-5 Belt Drive Blower Characteristics Table A-4 Direct Drive Blower CharacteristicsFurnace Motor Temp CFM Blower Rise Speed Model FLAGeneral Dimensions P2LBX16F14501 General Dimensions P4LBX20F19001 General Dimensions P3DHX12F08001 General Dimensions P2DHX16F12001 Page Page Thermostat calls for heat R7184 Detailed Sequence of OperationOperation R8184N Notes R7184 LED Diagnostic LightPreliminary Steps 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.

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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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