Lennox 16V38 Heat Pump Defrost Control Board - 100269-08

Specifications

• Part Number: 16V38
• Model Number: 100269-08
• Brand: Lennox
• Product Type: OEM Heat Pump Defrost Control Board
• Application: Residential Heat Pump Outdoor Unit
• Control Voltage: 24 VAC
• Frequency: 50/60 Hz
• Functions:
  • Time/Temperature Defrost Control
  • Defrost Relay
  • Anti-Short Cycle Protection
  • High & Low Pressure Switch Control
  • Manufacturing Test Mode
  • Field Connection Terminal Strip
• Compressor Protection: 30-second compressor shutoff before and after the defrost cycle.
• Weight: 0.45 lbs
• Replaces: 34M63, 84W88 and earlier 100269 series defrost boards.

Common Symptoms of a Failing Lennox 16V38 Heat Pump Defrost Control Board

The Lennox 16V38 (100269-08) is a heat pump defrost control board, not a furnace control board. It controls the outdoor unit's defrost cycle, compressor protection, pressure switch monitoring, and overall heat pump operation during both heating and cooling. Whether you're located in Calgary, Edmonton, Red Deer, Lethbridge, Medicine Hat, or elsewhere in Alberta, or in the Greater Toronto Area, including Toronto, Mississauga, Brampton, Vaughan, Markham, Richmond Hill, Oakville, Burlington, Milton, Ajax, Pickering, and Oshawa, a failing defrost board can cause the following problems:

• Outdoor heat pump becomes covered in ice and never enters a defrost cycle.
• Heat pump stops producing heat during cold weather.
• Outdoor unit starts and stops intermittently.
• Compressor will not start even though there is a call for heating or cooling.
• Heat pump locks out on high- or low-pressure safety switches.
• Auxiliary or emergency heat runs more often because the outdoor unit is not operating correctly.
• Unit short cycles due to a failed anti-short-cycle function.
• Defrost cycle runs too often or does not terminate properly.
• Diagnostic LEDs display fault codes or fail to illuminate.
• Intermittent heating and cooling caused by an internal failure of the defrost control board.