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16-02-2013, 04:16 PM #1
mitsubishi electric air conditioner outdoor unit model PUHY-P200YGM-A
We have a vrf Mitsubishi that on heating the compressor is making a short cycle. It starts for one minute and stops for two minutes . we are suspecting that is low on refrigerant but we cannot overide the program so thu unit runs full speed to check the pressures. the indoor units are with a wireless remote and there in no falut code on them . actually the unit has no fault it is only not sufficient on heating . we added some refrigerant and the pipe temperature was improving so that is why we keep assuming that it is low on refrigerant .
Could you be so kind to tell us if there is a test run button to check the performance .? and how ?
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16-02-2013, 04:43 PM #2
Re: mitsubishi electric air conditioner outdoor unit model PUHY-P200YGM-A
read through this manual http://www.mediafire.com/view/?pgsc06lqx377plt
- run through the refigerant checks list- best option is to reclaim and weigh whats in
if its lost gas then pressure test and prove its integrity before recharging
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18-02-2013, 01:09 AM #3
Re: mitsubishi electric air conditioner outdoor unit model PUHY-P200YGM-A
Test run >> outdoor unit's SW 3-1 to activate (test run) and SW3-2 for ON/OFF entire system
Refrigerant adjusting mode >> outdoor unit's SW4-3 need to ON