Mitsubishi Electric Air Conditioning Servicing & Repair
Servicing, fault-finding and repair for Mitsubishi Electric air conditioning — MSZ wall units, Mr Slim and City Multi VRF — across Orpington, Bromley, Croydon and South East London, from an engineer who has looked after a commercial Mitsubishi estate.
Mitsubishi Electric Pricing
- £120 first system, £90 each additional (business)
- £120 first unit, £70 each additional (home)
- £195 per system/year, twice-yearly
- New single-split from £1,700 fitted
- No VAT to add
The Mitsubishi Systems I Know Best
Before going full-time with Smith EcoFlow I ran planned maintenance in a care home with a Mitsubishi Electric City Multi VRF and Mr Slim estate. These are the systems I know best, and the ones I am most at home fault-finding.
- MSZ wall units — Mitsubishi Electric's home and small-office splits, including the Zen range.
- Mr Slim — light-commercial cassettes, ducted, ceiling-suspended and wall units, paired with PUZ or PUHZ outdoor units.
- City Multi VRF — many indoor units on one refrigerant system with central controls, common in offices, care homes and larger premises.
- MELCloud — Mitsubishi Electric's Wi-Fi interface and app for remote control and monitoring.
Mitsubishi Electric Fault Codes I See Most
Mitsubishi Electric shows check codes on wired controllers, and many wall units signal faults by flashing the operation light. These are the codes facilities managers ask me about most.
| Code | What it usually means |
|---|---|
| E6 | Communication fault between the indoor and outdoor units — wiring, connections or a circuit board. |
| P5 | Drain overflow protection on units with a drain pump, such as cassettes — a blocked drain, failed pump or float switch. |
| P6 | Freezing or overheating protection has operated — airflow, dirty filters or the refrigerant charge. |
| P8 | Pipe temperature fault — often low refrigerant, poor airflow or a sensor problem. |
What a Mitsubishi Electric Service Covers
Filters and the indoor coil
Filters washed and the coil cleaned. On cassettes the panel comes down and the coil and fan are cleaned in place, with the room protected first.
Drain pumps on cassettes
Mr Slim and City Multi cassettes lift condensate with a drain pump, and a P5 is the unit protecting your ceiling. Pump, float switch and drain run are tested every visit.
Outdoor units
Coils cleaned, fans checked, isolators tested and the surroundings cleared — commercial outdoor units get boxed in by bins and pallets more often than you would think.
Central and wired controls
Schedules, setpoints and locked functions on central controllers are reviewed — plenty of 'it won't cool' calls turn out to be a controller setting.
Written records
Every visit ends with a written condition report with photographs for each system, in the format compliance folders and insurers expect.
Installing or Replacing
New single-split systems start from £1,700 fully fitted with no VAT, after a free survey. Mitsubishi Electric models are quoted at the survey, because the price depends on the range and the room.
For larger premises, Mr Slim and multi-split options are surveyed and quoted individually, and I will be straight with you about whether repairing an older system makes more sense than replacing it.
Prices
Business premises: £120 for the first complete system and £90 for each additional system on the same visit. A complete system means one indoor unit and its matched outdoor unit. A twice-yearly maintenance agreement is £195 per system per year. Mitsubishi Electric VRF, multi-split and difficult-access systems are surveyed and quoted.
Homes: £120 for the first unit and £70 for each additional unit on the same visit.
Repairs are quoted at a fixed price before work starts. I'm not VAT-registered, so there's no VAT to add to any of it.
Mitsubishi Electric Questions
Book a Mitsubishi Electric Service or Repair
Priced per complete system, out-of-hours at no extra cost, and no VAT to add.
07717 846247
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