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Heat & Glo Error Code 2 Flash: 5-minute lockout (Gas Fireplace)

Updated · by Aurora Star Tech Inc.

Heat & Glo error code 2 Flash on a gas fireplace means: 5-minute lockout. It is also called Heat & Glo diagnostic code 2 Flash.

Medium severityGas FireplaceDSI

Homeowner? What Heat & Glo code 2 Flash means for you

Check, then call Your gas fireplace is reporting: 5-minute lockout. This is often caused by something simple. Try the safe checks below; if the code returns, book a service call before it turns into a no-heat or no-hot-water emergency.

Safe things you can check yourself

  • Replace the batteries in the remote and in the receiver or battery pack (weak batteries are the most common cause).
  • Make sure the wall switch is ON and the fireplace has power if it uses a plug-in adapter.
  • Check that the gas valve to the fireplace is open (handle in line with the pipe).
  • If you smell gas, do not try to light it: leave the house and call your gas utility or 911 from outside.

Call (647) 657-2977Book a service call

Licensed technicians serving Vaughan, Toronto and the GTA.

What does Heat & Glo error code 2 Flash mean?

The DSI module tried to light the burner and failed, so it locked out for 5 minutes. LED pattern on the DSI module: slow flash = normal, no call for heat; fast flash = normal, calling for heat; two flashes = 5-minute lockout; steady = hard lockout / control failure.

Applies to: Older Heat-N-Glo DSI gas fireplaces with RAM 1MC1-01/-05, RAM-1-RS, CFX-DA, Grand-50-C (120 VAC modules); LED applies to RAM 1MC1, CFX-DA and Grand-50-C

Common causes of Heat & Glo code 2 Flash

  • Gas shut-off closed or air in the gas line
  • Ignitor not over the burner ports, or sparking at the base instead of the tip
  • Burner ports blocked by embers, or plugged burner orifice

A technician checks these and 3 other possible causes on site before replacing any part.

Safety: Gas, electrical and refrigerant work must be done by a licensed technician. Turn off power and gas before servicing, never bypass a safety control, and always follow the manufacturer's manual for your exact model.

Heat & Glo models that use code 2 Flash

CFX-DAGrand-50-CRAM-1-RSRAM 1MC1-01RAM 1MC1-05

Other Heat & Glo Gas Fireplace codes

CodeMeaning
LED OffLED not flashing - no power to module
Steady FlashHard lockout - control failure

All Heat & Glo Gas Fireplace error codes →

Heat & Glo code 2 Flash: homeowner questions

What does Heat & Glo code 2 Flash mean?

5-minute lockout. The DSI module tried to light the burner and failed, so it locked out for 5 minutes. LED pattern on the DSI module: slow flash = normal, no call for heat; fast flash = normal, calling for heat; two flashes = 5-minute lockout; steady =…

Is it safe to keep using my gas fireplace with code 2 Flash?

It depends on the cause. This is often caused by something simple. Try the safe checks below; if the code returns, book a service call before it turns into a no-heat or no-hot-water emergency.

Can I reset Heat & Glo code 2 Flash myself?

You can try one reset (power off for 30 seconds, then on). If Heat & Glo code 2 Flash comes back, the cause is still there and a licensed technician should check it.

Who can fix Heat & Glo code 2 Flash near me?

Aurora Star Tech Inc. repairs Heat & Glo gas fireplaces in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.

Homeowner help: Gas Fireplace Won't Light or Stay Lit

Troubleshooting guides

Source: Heat-N-Glo DSI / HSI Troubleshooting Guide (Professional Development), LED codes and RAM 1MC1 / CFX-DA / Grand-50-C sections, p.6-11, 34-38, 42-45. Written in our own words as a summary; always check the original manual.

General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.

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