Daikin Split Unit Coil Repair
Job Description: Daikin Split Unit Coil Repair
Area: Fleet Street, London
Issue Identified: Following a call out to site the engineer advised that the above unit required a pressure leak test as was showing a low-pressure fault
Works carried out:
- Isolated the Daikin Split unit electrically and mechanically.
- Recovered refrigerant into certified cylinder for storage on site.
- Weighed and confirmed the charge.
- Pressure tested with OFN (oxygen free nitrogen) to locate leak.
- Leak found on coil and repaired.
- Re-pressure tested.
- Once proved released OFN (oxygen free nitrogen) to atmosphere and evacuated system to a minimum of 2 Torr.
- Re-charged with recovered refrigerant and trim charged with virgin refrigerant.
- Test ran and commissioned.
- Completed waste transfer note and handed to on-site representative.
- Completed F Gas records.

ACES Group Can Also Supply and Install New Air-Conditioning Units – Call Us On 01865 890996
Some of the many Daikin Units we support
| – RXM-R – ARXM-R – FTXG-LS – FVXS-F – FTXS-K – CTXM-R – FVXM-F – FTXG-LW – CTXM-M – CTXS-K – RXS-L | – FTXS-G – RXS-L3 – ARXS-L – FDXS-F9 – ARXS-L3 – FDXS-F – RXM-R – FDXM-F – ARXM-R – FLXS-B – FLXS-B9 | – CTXM-N – RXYSA-AY1 – FCAG-B – LRNUN-AY1 – CTXA-AW – FCAHG-H – FXFQ-B – RZQG-L(8)Y1 – RZAG-A – CTXA-BS – RZAG-MV1 | – 2AMXF-A – 3MXM-N9 – 3MXM-N – 2MXM-M9 – 5MXM-N9 – 5MXM-N – 2MXM-M – 4MXM-N9 – 2MXM-N – 5MXM-M – 4MXM-M | – RXYQ-T9 – RYMQ-U – RYYQ-U – FXFA-A – RXYSA-AY1 – FXFQ-A – RWEYQ-T8 – RYYQ-T8 – RXYQ-U – RXYQ-T8 – RQYQ-P |

Daikin Air-Conditioning Systems designed for comfort and efficiency. Prominent in small, medium, and large offices. Daikin air curtains minimise hot and cold air loss. Fully flat cassettes integrate seamlessly into false ceilings and will not disturb office concentration with its quiet operation. ACES engineers specialise in service and maintenance of indoor and outdoor Daikin units.
Abbreviations
HVAC – Heating, Ventiliation and Air Conditioning, PLT – Pressure Leak Test, PRV – Pressure Relief Valve, PPM – Planned Preventative Maintenance, OFN – Oxygen Free Nitrogen, AHU – Air Handling Unit, GWP – Global Warming Potential, VRF – Variable Refrigerant Flow, VRV – Variable Refrigerant Volume, ACU – Air Conditioning Unit, FCU – Fan Coil Unit, AC – Air Conditioning, HP – High Pressure, LP – Low Pressure