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A1: PCB Fault (Daikin)

Daikin heat pump printed circuit board has detected an internal fault.

What This Error Code Means

The main control board has malfunctioned and cannot operate the system properly.

Common Causes

  • Power surge damage
  • Component failure on PCB
  • Moisture or corrosion on board
  • Loose connections
  • Overheating of control board

Affected Brands

Daikin

How ROMA Heating Fixes This

  • Inspect PCB for visible damage or burning
  • Check all connectors are seated properly
  • Test voltage inputs to board
  • Replace PCB if internal fault confirmed
  • Verify system operation after replacement

Why Trust ROMA Heating

24/7 Emergency

True round-the-clock service including weekends and holidays

Licensed Technicians

TSBC licensed and trained on all major heat pump brands

Fast Diagnosis

We know exactly how to interpret and resolve error codes

Related Services

Seeing Error Code A1?

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