evening all
(posting on a friday night! man i must be getting old! :rolleyes:)
back after some time in the wilderness new firm...new username... but same old daikin..tut
got sent to a job today where a previous engineer had (very) recently reclaimed and re-gassed
on a REYQ16M8W1B/r410a/factory charge:14.6kgs..approx another 5kgs by mr previous...?? he claimed it needed another 2.5kgs thats why it was underperforming?
got to site and found all cassettes with poor off coil temps (average) across all 8 indoor units
about 25c in full heating(bank full of women!)
was informed "mr previous" had put a quote in for new inverter board/compressor the day before,after the re-gas.
checked ohms and to ground (using multimeter)on all 3 comps and was confident there were no issues with all 3,nothing glaringly obvious id say.
put gauges on at service ports an left them on for 30mins and got 25bar/360psi HP and 7bar/100psi LP suggesting it was a bit short and all controllers had E4 when pressing test button.
considering it was cold and wet i saw no frosting on condensing coil,usually bottom half isnt it?then defros
so i'm guessing an obvious undercharge or a leak still present in system?
heres the stumper for me...i understand the inverter comp1(going from left to right in unit) will start up on first load through the inverter board and do its thing,then the following comp2 will come in on more demand and so forth to comp 3?
also when on site only middle compressor was running and inverter comp idle? but no fault/outdoor safety activated like the older daikins(E0) when there I-boards went down?
due to it pissing down with ice cold rain and fading light and 400v i beat i hasty retreat...
daikin tech closed till monday,god bless them:p
if anyone could point me in the direction of service manuals/settings or any info on troubleshooting them dam inverter boards i would be much obliged...
ta
(posting on a friday night! man i must be getting old! :rolleyes:)
back after some time in the wilderness new firm...new username... but same old daikin..tut
got sent to a job today where a previous engineer had (very) recently reclaimed and re-gassed
on a REYQ16M8W1B/r410a/factory charge:14.6kgs..approx another 5kgs by mr previous...?? he claimed it needed another 2.5kgs thats why it was underperforming?
got to site and found all cassettes with poor off coil temps (average) across all 8 indoor units
about 25c in full heating(bank full of women!)
was informed "mr previous" had put a quote in for new inverter board/compressor the day before,after the re-gas.
checked ohms and to ground (using multimeter)on all 3 comps and was confident there were no issues with all 3,nothing glaringly obvious id say.
put gauges on at service ports an left them on for 30mins and got 25bar/360psi HP and 7bar/100psi LP suggesting it was a bit short and all controllers had E4 when pressing test button.
considering it was cold and wet i saw no frosting on condensing coil,usually bottom half isnt it?then defros
so i'm guessing an obvious undercharge or a leak still present in system?
heres the stumper for me...i understand the inverter comp1(going from left to right in unit) will start up on first load through the inverter board and do its thing,then the following comp2 will come in on more demand and so forth to comp 3?
also when on site only middle compressor was running and inverter comp idle? but no fault/outdoor safety activated like the older daikins(E0) when there I-boards went down?
due to it pissing down with ice cold rain and fading light and 400v i beat i hasty retreat...
daikin tech closed till monday,god bless them:p
if anyone could point me in the direction of service manuals/settings or any info on troubleshooting them dam inverter boards i would be much obliged...
ta