Prem-i-air PMSF12 - No cold air

[roggy]

Hi,

Hoping you can help.

Firstly I am in no way a refrigeration engineer so my assertion maybe completly wrong so please be gentle!

I have had a Prem-i-air PMSF12 - DIY split unit with quick connect couplings for about 4 years.

Up until about 1 week ago it was working perfectly, however it has now stopped blowing cold air.

Things I have checked:

1) Internal filter is cleaned about every month and is clean

2) external unit about the same

3) external unit and internal unit are powered and both fans are blowing.


- My guess is that it needs a recharge of R410A - 1100g?

Two questions

1) Does a recharge sound logical?

2) I have had a quote for about £250 including 2 hours work vacumn,recharge and pressure test is that ok?

3) Will the fact that it has quick connects effect the engineers ability to recharge?


Thanks for your help.

[install monkey]

qwik couplers are the work of the devil- the o rings deteriorate with heat, you say both fans are running,can you hear the compressor run?-most small cheap units dont have a low pressure switch- normally just the compressor overheats after a while- is there any signs of oil anywhere-this would indicate a leak.

[roggy]

Hi,

Thanks for replying so quickly - yes I can hear the compressor switching on - but I cant hear the fizzing and the poping that I used to.

Feeling the metal "fins" (evaporator?) on the internal unit its not cold at all.

However I have just looked outside and can see condensation on the quick connection couplings.

No oil can be seen on the floor under or surrounding the external unit

[install monkey]

first ensure they weigh the gas they remove to compare this to the factory charge-usually around 1.1kg
then if they weigh out the correct charge then possibly compressor failure-not pumping or partial blockage
if no gas or lost gas from the system then pressure test to find and fix the leak-vac system and weigh in new gas.
found a technical support details for you

Product Support	Email :	helpdesk@prem-i-air.co.uk
	Telephone :	01744 745030
	Fax :	01744 745001

[roggy]

Thanks again for your help.