Rheem AC & Heat Pump Error Code LEDs off: Meaning & How to Fix It

By the ErrorCodePro Editorial Team · Last reviewed October 20, 2026

Rheem ac & heat pump error code LEDs off means: Both LEDs are off: the control board has no power. [1] Keep using it? The system won't run. Start with the owner checks below, beginning with: check outdoor power.

Quick facts

Code	LEDs off
Also shown as	None listed by the manufacturer
Brand / appliance	Rheem ac & heat pump (rp16 heat pump defrost control (led 1 / led 2))
System	Power supply
Official meaning	Both LEDs are off: the control board has no power. [1]
Keep using it?	The system won't run
DIY-safe?	Owner checks only (listed below)
Support	Rheem dealer (rheem.com)

On this page: Meaning · Steps · Parts · When to call a technician · Related codes · FAQ

What error code LEDs off means on a Rheem ac & heat pump

Both LEDs are off: the control board has no power. [1]

This is a power supply code. Codes and wording can vary by model, so check your owner's manual for your model number.

How to fix Rheem ac & heat pump error code LEDs off (safe owner checks)

Owner checks only: on heating, cooling and water-heating equipment, limit yourself to reading the code and checking the thermostat, breaker and service switch, air filter, condensate drain, that the gas supply valve is open (no disassembly) and that vent terminals are clear of snow or debris. Reset power only if your manual allows it.

Safety first: disconnect power before you remove any panel or reach into the sump or drum. Do not touch wiring, the control board or the motor. If you see water near electrical parts, stop and call a technician. These steps are based on Rheem's published guidance [1], rewritten for clarity.

Check outdoor power. Make sure the outdoor unit's breaker hasn't tripped and the disconnect box next to the unit is switched on.
Check the thermostat. Make sure it's set to COOL (or HEAT for heat pumps) with fresh batteries.

Parts that may be involved

Exact parts depend on your model number. This page lists part types only, never part numbers.

No specific part is implied by the manufacturer's guidance for this code.

When to call a technician

Refrigerant charge, pressure switches, compressor, contactor, capacitor, sensors or wiring: EPA 608-certified HVAC technician
Gas valves, burners, igniters, flame sensors, venting/flue or CO concerns: licensed HVAC technician or plumber
Refrigerant work: EPA 608-certified technician only
Smell of gas: leave and call the gas utility or 911
Anything involving wiring, the control board, the motor or the water valve electrics
The appliance is under warranty: contact Rheem dealer (rheem.com) first

Frequently asked questions

What does error code LEDs off mean on a Rheem ac & heat pump?

Rheem lists LEDs off as follows: Both LEDs are off: the control board has no power.

Is it safe to keep using the ac & heat pump with LEDs off?

The system won't run.

Can I fix Rheem ac & heat pump error LEDs off myself?

Only with the owner checks on this page, starting with: check outdoor power. If it persists, call a technician or Rheem dealer (rheem.com).

Sources

https://pts.myrheem.com/docstore/webdocs/Public/ServicePublic/Trouble2a/pdfs/HP/RP16/92-105074-12-01_RP16_IO.pdf (official)

Last reviewed: October 20, 2026. ErrorCodePro is not affiliated with Rheem.