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E8-00

E8-00 — Power input overvoltage

Daikin · ASHP Error Codes

What does E8-00 mean?

The voltage supplied to the unit is higher than the acceptable range.

Common Causes

  • Electrical grid fluctuations
  • Faulty power supply unit
  • Incorrect voltage connection

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the main power supply voltage with a multimeter (if qualified).

  2. 2

    Ensure the unit is connected to the correct voltage supply.

  3. 3

    Verify that no other high-power devices are causing voltage spikes.

  4. 4

    Contact a qualified electrician or technician.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

7H-017H-01 — Water flow problem7H-047H-04 — Water flow problem during domestic hot water production7H-057H-05 — Water flow problem during heating/sampling
Source: Daikin ASHP Error Codes
Open Manual (Page 3)Search more codes in this manual