York P3DHX12F08001, P2DHX16F12001, P4LBX20F19001 But Control locks out and starts Before Oil

Page 24

Table C-2: R7184 Troubleshooting continued from previous page

 

Procedure

 

Status

 

Corrective Action

 

 

 

Indicator light turns off.

Eliminate external light source or permanently shield cad cell.

 

 

 

 

4.

Replace cad cell with new cad cell and recheck.

4. Shield cad cell from exter-

 

5.

If indicator light does not turn off, remove cad cell lead-

 

 

wires from R7184 and recheck.

 

nal light.

 

Indicator light stays on.

 

 

 

6.

If indicator light turns off, replace cad cell bracket as-

 

 

 

 

 

 

 

 

 

sembly.

 

 

 

 

7.

If indicator light does not turn off, replace controller.

 

 

 

 

 

5.

Jumper thermostat (T

-T)

Burner starts.

Trouble in thermostat or limit circuit. Check thermostat or limit

 

terminals on R7184

 

wiring connections.

 

 

 

IMPORTANT

 

 

Disconnect the line voltage power and open line switch.

 

Burner does not start.

Check all wiring connections.

First

remove one thermostat

Tighten any loose connections and recheck.

 

lead wire.

 

 

If burner does not start, replace R7184

 

 

 

 

 

 

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

6.

Reset

oil

primary

control

Indicator light stops flashing.

Go to Step 7.

 

by pushing in and releas-

Indicator light continues

to

Verify that the control is not in restricted mode. (See notes at

 

ing red reset button.

 

flash at 1 Hz rate.

 

end of this table.). If not in restricted mode, replace R7184

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ignition is off

 

Spark ignitor could be defective. Check for line voltage at

 

 

 

 

 

 

 

 

ignitor terminals. If line voltage is present, replace R7484.

7.

Listen

for

spark

 

after

 

 

 

Ignition is on.

 

Go to Step 8.

 

burner turns on (after 2

 

 

 

 

 

 

second delay).

 

 

Ignition is on but no oil

is

Wait for “Valve ON” delay to complete. Check oil supply, and

 

 

 

 

 

 

 

being sprayed into the com-

 

 

 

 

 

 

 

oil line valve. Check for filter blockage or seized oil pump.

 

 

 

 

 

 

 

bustion chamber.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8.

Check

indicator light

after

Indicator light is on until the

Replace R7184

 

flame

is

established,

but

control locks out and starts

 

before

oil

primary

control

flashing during lockout.

 

 

 

locks out.

 

 

 

 

Indicator light stays off.

 

Go to step 9.

 

 

 

 

 

9.

Check cad cell sighting for

Burner locks out.

 

Go to step 10.

 

view of flame.

 

 

 

 

 

•

Disconnect

line

voltage

 

 

 

 

power

and

open

line

 

 

 

 

switch.

 

 

 

 

 

 

 

 

•

Unplug cad cell and clean

 

 

 

 

cad cell face with soft

 

 

 

 

cloth.

Check

sighting for

Burner keeps running.

 

System is OK.

 

clear view of flame. Re-

 

 

 

 

place cad cell in socket.

 

 

 

•

Reconnect

line

voltage

 

 

 

 

power

and

close

line

 

 

 

 

switch.

 

 

 

 

 

 

 

 

•

Start burner.

 

 

 

 

 

 

Continues on next page

24

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Contents Installation Manual ContentsIntroduction Heat LossLocation of Unit DOWN-FLOW Installation Horizontal Installation NON-SUSPENDED InstallationSuspended Installation AIR ConditioningCombustion AIR Chimney VentingCommon Chimney Problems Draft Regulator ControlPiping Installation Minimum Chimney Base Temperatures FOIL Tank Electrical ConnectionsNeutral Wire normally the white wire is Never Moved to AD Circulating AIR BlowerJust the Blower Speed Procedure OIL BurnerBurner Electrodes OIL Burner SET-UPFurnace Installation SET-UP Stack TemperatureSmoke Test Note Maintenance and Service Operating InstructionsTable A-1 Beckett OIL Burner SET-UP BTU/HrDelavan Pressure Rate PlateTable A-2 Direct Drive Blower SET-UP Table A-3 Belt Drive Blower SET-UPOutput Motor Blower SET-UP Cooling Capacity Furnace Table A-4 Direct Drive Blower Characteristics Table A-5 Belt Drive Blower CharacteristicsFurnace Motor Temp CFM Blower Rise Speed Model FLAGeneral Dimensions P2LBX16F14501 General Dimensions P4LBX20F19001 General Dimensions P3DHX12F08001 General Dimensions P2DHX16F12001 Page Page R7184 Detailed Sequence of Operation Thermostat calls for heatOperation R7184 LED Diagnostic Light R8184N NotesPreliminary Steps Table C-2 R7184 Troubleshooting But Control locks out and starts Before Oil Table C-3 System and General Troubleshooting Problem Possible Cause RemedyLow oil pump pressure Check stack temperature. Stack temperatures will normally P4LBX20F19001 Assembly Notes P3DHX Series Downflow Configuration 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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