richard..
24-02-2010, 09:01 PM
hi there
was working on two mits unit the other day and i had a problem with the outdoor coils icing up.no fault codes were showning and the client only knew he had a problem once they lost heating from the indoor coils.they switched off outdoor units to defrost them.when i arrived i checked themisters found no faults with readings.set outdoor dip switches to increase defrost timmer from 50 mins to 90 mins and also defrost start temp and defrost stop temp.left unit running and will check operation in a few days.the units are PURY P250 YGMA this site has around ten units and only the two ground floor units iced up.the only dif i found was these units have one indoor on 24/7. not sure that me adjusting the dip switches will be the main problem solved can,nt see it being a gas prob as both units are doing the same fault
was working on two mits unit the other day and i had a problem with the outdoor coils icing up.no fault codes were showning and the client only knew he had a problem once they lost heating from the indoor coils.they switched off outdoor units to defrost them.when i arrived i checked themisters found no faults with readings.set outdoor dip switches to increase defrost timmer from 50 mins to 90 mins and also defrost start temp and defrost stop temp.left unit running and will check operation in a few days.the units are PURY P250 YGMA this site has around ten units and only the two ground floor units iced up.the only dif i found was these units have one indoor on 24/7. not sure that me adjusting the dip switches will be the main problem solved can,nt see it being a gas prob as both units are doing the same fault