Skytech · Gas fireplace

1 Beep Every 4 Seconds Communication safety - remote and receiver not talking

Low severity AF-4000

What the control is telling you

Only on transmitters with an LCD screen: the transmitter and receiver are not communicating properly.

Applies to: Skytech AF-4000 MOD-1, AF-4000 MOD A and SMART MOD remote modules (used on many fireplace brands)

Likely causes

Weak batteries in the transmitter or receiver
Transmitter more than 20 ft from the receiver
Transmitter inside a metal enclosure or lying on metal

Test and repair steps

Put new batteries in both the transmitter and the receiver.
Keep the transmitter within 20 ft of the receiver.
Do not keep the transmitter in a metal enclosure or lying on a metal surface.
If needed, relearn the code press LEARN on the module (one beep = ready), then the transmitter; five quick beeps = code accepted. Holding LEARN for 10 s clears the memory (three long beeps).

Save it for the next call

Star this code in the HVACopedia app and keep the whole library on your phone for jobs with no signal.

Open the app

Source: Skytech Audible Alerts & Error Codes for AF-4000 MOD-1 / MOD A / SMART MOD, p.2-3. Summarized in our own words; check the original manual for your model.

Homeowner looking at this code? See what it means for you and when to call a technician.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.