1501

[yidtel]

mitsi puhy-p250...10 indoor units 1501 keeps popping up now and again, gas charge?? but unit was checked recently for leaks..no sign
lev's on the indoor letting gas through?? any quick or easy tips on fault finding...thanks

[Thermatech]

Please advise which model
like
YM
YMA-B
YMF-C
YEM-A
YHM-A

These units have been sold in the uk since 1992
& have been continually upgraded throughout that period, starting with R22 models then moving on to R407c models & now on the 3rd evolution of the R410a models.