- HVAC
- Air conditioner
E0
Daitsu E0 on an air conditioner: indoor and outdoor communication
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Medium
Quick answer
On Daitsu Artic Plus wall-mounted splits, E0 means a communication fault between the indoor and outdoor units. Switch the unit off, write down the code and ask a qualified professional to check it, as Daitsu requires.
Safety first
Stop and check this first
- Daitsu requires the unit to be serviced by qualified professionals, all power circuits to be disconnected before accessing the terminals, and anyone working on the refrigerant circuit to hold a valid certificate. This unit uses R32.
Safe checks you can perform
- Code on the indoor display
- Symptoms that require cutting the power
- Connecting cable and terminals
Leave these tasks to a qualified professional
- Do not attempt this professional task: Check the connection before the boards
- Do not attempt this professional task: Test run
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Check the connection before the boards
What they doThe technician checks the cable and terminals between units before proposing a board replacement.
They must show youthe terminals checked and what was found.
In writingwhich part was replaced, its reference and why.
Test run
What they doAfter the work the technician runs the unit and checks E0 does not return.
They must show youthe unit running with no code.
In writingdate and result of the test.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Code on the indoor display
- Who:
- you.
- How:
- look at the indoor unit display: Daitsu shows the fault code there.
- Result that matters:
- that the code is E0 (zero) and not E8 or a similar one.
- If it is E0:
- it is communication between units; carry on with this page.
- If it is CL:
- Daitsu says it is not an error but the filter cleaning reminder.
- Evidence to keep:
- a photo of the display with the code, date and time.
Evidence: Daitsu Artic Plus DS-9KTP-6, DS-12KTP-6, DS-18KTP-6, DS-24KTP-6: manual de instalación y usuario
Symptoms that require cutting the power
- Who:
- you.
- How:
- check, without opening the unit, for strange noises, overheated cables or plugs or very strong smells. Daitsu says to switch off at once and cut the power in those cases.
- Result that matters:
- whether any of those symptoms appear besides the code.
- If there is one:
- switch off, cut the power at the consumer unit and report the symptom to the technician.
- If there is none:
- switch off with the remote and ask for a check with the code noted.
- Evidence to keep:
- a note of the symptom seen or that there was none.
Evidence: Daitsu Artic Plus DS-9KTP-6, DS-12KTP-6, DS-18KTP-6, DS-24KTP-6: manual de instalación y usuario
Connecting cable and terminals
- Who:
- an air conditioning technician.
- How:
- with all power circuits disconnected, checks the cable and terminals between units and then the boards.
- Result that matters:
- whether communication fails in the connection or in a board.
- If the connection fails:
- it is fixed without replacing boards.
- If the connection is fine:
- the indoor and outdoor boards remain to be assessed.
- Evidence to keep:
- a job sheet with what was checked and photos of the terminals.
Daitsu requires all power circuits to be disconnected before accessing the terminals: technician only.
Evidence: Daitsu Artic Plus DS-9KTP-6, DS-12KTP-6, DS-18KTP-6, DS-24KTP-6: manual de instalación y usuario
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- HVAC
- Brand
- Daitsu
- Product type
- Air conditioner
Known code variants
- Daitsu E0
- E 0
- Mitsubishi E0
- Mitsubishi Electric E0
- Mr. Slim E0
- PKA E0
What it means
Daitsu defines E0 as a communication fault between the indoor and outdoor units in the Artic Plus code table. The table gives only the meaning. The code does not show whether the connecting cable between units, its terminals or one of the boards has failed: a professional determines that with all power circuits disconnected before accessing the terminals, as Daitsu asks.
Warnings and stop conditions
- Highsource verified
Daitsu requires the unit to be serviced by qualified professionals, all power circuits to be disconnected before accessing the terminals, and anyone working on the refrigerant circuit to hold a valid certificate. This unit uses R32.
Evidence: Daitsu Artic Plus DS-9KTP-6, DS-12KTP-6, DS-18KTP-6, DS-24KTP-6: manual de instalación y usuario
Symptoms and causes
Probable causes · in order
- Connection between unitsPossible
The cable and terminals joining indoor and outdoor carry the communication. A professional checks them first because they are fixed without replacing boards.
Evidence: Daitsu Artic Plus DS-9KTP-6, DS-12KTP-6, DS-18KTP-6, DS-24KTP-6: manual de instalación y usuario
- Indoor or outdoor boardPossible
If the connection is fine, communication fails in the control of one of the units. Only a professional confirms it.
Evidence: Daitsu Artic Plus DS-9KTP-6, DS-12KTP-6, DS-18KTP-6, DS-24KTP-6: manual de instalación y usuario
Virtual technician
Does E0 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
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