AskWhiz
Continuous Rapid FlashAmana

Amana Continuous Rapid Flash

Reversed polarity of 115V or 24V power to the furnace or control module.

Source: Amana/Amana_2021F_InstallationGuide_HVAC_EN.pdf

Want this fix in your inbox? Full Continuous Rapid Flash guide + every Amana code, printable, free.

What does Amana Continuous Rapid Flash mean?

A continuous rapid flash means the polarity of the 115-volt or 24-volt power to the furnace or integrated control module is reversed, and the furnace fails to operate. The control needs correct line and transformer polarity to sense flame and run safely, so it flashes continuously until the wiring is corrected.

Symptoms

  • Furnace fails to operate
  • Integrated control module diagnostic LED flashes continuously (rapid flash)
  • No heating cycle begins
  • Polarity-related fault present at power-up

Common causes

  • Polarity of 115-volt or 24-volt power to the furnace or control module reversed
  • Orange and gray wires to the transformer reversed
  • Poor unit ground

Diagnostic steps

  1. 01

    Review the wiring diagram

    Review the wiring diagram to identify and correct reversed polarity of the 115-volt AC power to the furnace or control module.

  2. 02

    Correct the transformer wires

    Reverse the orange and gray wires going to the transformer so the polarity is correct.

  3. 03

    Verify proper ground

    Verify proper ground and correct it if necessary.

  4. 04

    Power off before servicing

    Turn power off prior to repair before correcting any line or transformer wiring.

Keep this fix — get it by email with every Amana error code

A clean printable version of this Amana Continuous Rapid Flash guide + the full Amana code pack (13 codes), straight to your inbox. Free.

I am a — required, one click

When to call a professional

Correcting reversed line or transformer polarity means working with 115-volt wiring where a mistake can be dangerous. If you cannot confidently read the wiring diagram, identify the line polarity, and correct the transformer connections with power off, call a qualified electrician or servicer. Reversed polarity should be resolved before the furnace is returned to service.

Don't want to DIY this? Open a service ticket on AskWhiz and get it handled — pay per ticket, no subscription.

Open a ticket — free account

Other Amana error codes

1 Flash

System lockout from too many failed ignition retries — the furnace could not establish or hold flame.

2 Flashes

Pressure switch circuit is closed when it should be open — the induced draft blower is not operating.

3 Flashes

Pressure switch circuit is not closing while the induced draft blower runs — restricted airflow or a faulty switch.

4 Flashes

Primary or auxiliary limit circuit is open — the furnace is overheating from insufficient airflow.

5 Flashes

Flame sensed with no call for heat — a short to ground in the flame sense circuit.

6 Flashes

Rollout limit open or the integrated control module fuse is blown — possible flame rollout.

7 Flashes

Flame sense microamp signal is low — a coated, oxidized, or misaligned flame sensor.

8 Flashes

Igniter relay fault — wiring, igniter, grounding, or control module problem.

9 Flashes

Twinning fault — twinned furnaces are not wired or relayed together correctly.

10 Flashes

Open fuse / no 24V power to the integrated control module — often from a voltage surge.

11 Flashes

Igniter open — broken igniter, bad wiring, or poor grounding.

12 Flashes

Inducer relay fault — inducer wiring, blockage, grounding, or control module problem.

View all Amana error codes →

AskWhiz Playground

Test your diagnostic skills

Play a real HVAC service call in the AskWhiz Playground — real brands, real fault codes, no signup.

Play a real service call