H4
Daikin
Daikin air conditioner error H4
Meaning
Failure of lp switch
General meaning for the brand's models, unless a model's own manual says otherwise.
Meaning
Malfunction of low pressure switch (LPS)
General meaning for the brand's models, unless a model's own manual says otherwise.
Causes and how to check
- 4 possible causes
- the cited manual page, and follow-up questions
No account needed to look up codes.
Guides
- Pressure, low refrigerant and high discharge temperature errors: where to start
Pressure and discharge-temperature protection codes: tell a low charge from a blockage or poor heat rejection before charging.