Daikin Air Conditioner Error P1

⚡ Quick Answer: The Daikin air conditioner P1 error indicates a drainage issue, often linked to a power supply voltage imbalance or an open phase condition, typically... ✅ DIY Fixable

What Does Error P1 Mean?

The Daikin air conditioner P1 error indicates a drainage issue, often linked to a power supply voltage imbalance or an open phase condition, typically occurring at the outdoor unit. Symptoms include the air conditioner failing to start or stopping unexpectedly, possible abnormal sounds, and no signs of overheating or refrigerant issues. Immediate action is required to address these electrical supply problems to ensure proper operation.

Common Symptoms:

  • Air conditioner does not start or stops operation when P1 is shown on controller/display
  • Possible abnormal sound or operational interruption when error occurs
  • No immediate overheating or refrigerant‑related symptom indicated specifically by P1

Possible Causes

  • Supply voltage imbalance or open phase in three‑phase power supply (high)
  • Unstable or abnormal external power source (medium)
  • Internal electrical component faults when supply voltage is normal (medium)

How to Fix Error P1

DIY Fix Check basic power supply conditions

  1. Ensure the unit is switched off before inspecting power supply.
  2. Verify proper three‑phase power presence with main breaker and panel labels.
  3. Check for blown fuses or tripped breakers supplying the air conditioner.
  4. Note any recent outages, lightning strikes, or power fluctuations at the building.

Technician Only Measure and correct supply voltage imbalance, inspect electrical components

  1. Using appropriate instruments (voltage meter or memory recorder), confirm individual phase voltages and phase sequence.
  2. Ensure voltage balance and phase presence meet Daikin specifications for the model.
  3. Inspect the outdoor unit power terminal, main circuit capacitor, and inverter board for damage or signs of electrical stress.
  4. Correct any loose connections, replace damaged capacitors or inverter boards as applicable.

Parts needed: Voltage measuring tools (for diagnostics), Replacement capacitor, Replacement inverter board or power terminal components

🛑 When to Call a Pro:
  • If P1 persists after checking external supply power balance
  • If there are signs of electrical burning, smell, or visible damage to unit wiring
  • When the user lacks equipment or training to safely diagnose electrical supply

Technical Specifications

wattage 120W
component Drainage System
resistance Varies by component
part_number DAIKIN 4B200A
voltage_rating 230V AC

Common Questions

What does P1 error mean on daikin air conditioner?

P1 error indicates a drainage issue due to a power supply voltage imbalance or open phase, causing the unit to stop functioning.

Can I fix daikin air conditioner P1 error myself?

Yes, check the power supply and ensure the unit is off before inspecting for blown fuses or tripped breakers.

How much does it cost to fix P1 error?

Repair costs range from ¥10,000 to ¥80,000+, depending on the parts replaced and service fees.

When should I call a technician for P1?

Call a technician if the error persists after checking power supply or if there are signs of electrical damage.

Sources & References

Data last verified: 2026-07-01

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