Amana Continuous Rapid Flash Error Code
Reversed polarity of 115V or 24V power to the furnace or control module.
Source: Amana/Amana_2021F_InstallationGuide_HVAC_EN.pdf
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
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Diagnostic steps
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.
Correct the transformer wires
Reverse the orange and gray wires going to the transformer so the polarity is correct.
Verify proper ground
Verify proper ground and correct it if necessary.
Power off before servicing
Turn power off prior to repair before correcting any line or transformer wiring.
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.
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Other Amana Error Codes
System lockout from too many failed ignition retries — the furnace could not establish or hold flame.
Pressure switch circuit is closed when it should be open — the induced draft blower is not operating.
Pressure switch circuit is not closing while the induced draft blower runs — restricted airflow or a faulty switch.
Primary or auxiliary limit circuit is open — the furnace is overheating from insufficient airflow.
Flame sensed with no call for heat — a short to ground in the flame sense circuit.
Rollout limit open or the integrated control module fuse is blown — possible flame rollout.
Flame sense microamp signal is low — a coated, oxidized, or misaligned flame sensor.
Igniter relay fault — wiring, igniter, grounding, or control module problem.
Twinning fault — twinned furnaces are not wired or relayed together correctly.
Open fuse / no 24V power to the integrated control module — often from a voltage surge.
Igniter open — broken igniter, bad wiring, or poor grounding.
Inducer relay fault — inducer wiring, blockage, grounding, or control module problem.