jbreiden
14-11-2010, 08:03 PM
I'm a homeowner, and just had a Mitsubishi City Multi system installed. It is awesome except that the indoor air handler fan never stops. And that's a problem at night.
The house has four zones. One of them is for bedrooms and uses a PEFY ducted air handler. On a cold winter night the bedrooms receives warm air, then cold air, then warm air, then cold air, etc. Cold means 10C because the return is in a hallway that we don't heat at night and the ducts run through an unconditioned crawlspace. There is a remote temperature sensor in the master bedroom.
Our contractor talked to Mitsubishi and was told (1) The fan will continue to operate, for a period of time, after the temperature is reached. This is by design to provide better heat circulation to the conditioned area. (2) There is no configuration/settings to immediately stop the fan after the temperature is reached to the pre-set value. This is also true using the temperature sensor inside the PEFY unit.
I wonder if someone knows a super ultra crazy secret trust no-one James Bond-like trick to solve this problem.
PEFY-P18NMAU-E (ducted indoor air handler)
PUMY-P48NHMU (outdoor unit)
TC-24 (central controller)
The house has four zones. One of them is for bedrooms and uses a PEFY ducted air handler. On a cold winter night the bedrooms receives warm air, then cold air, then warm air, then cold air, etc. Cold means 10C because the return is in a hallway that we don't heat at night and the ducts run through an unconditioned crawlspace. There is a remote temperature sensor in the master bedroom.
Our contractor talked to Mitsubishi and was told (1) The fan will continue to operate, for a period of time, after the temperature is reached. This is by design to provide better heat circulation to the conditioned area. (2) There is no configuration/settings to immediately stop the fan after the temperature is reached to the pre-set value. This is also true using the temperature sensor inside the PEFY unit.
I wonder if someone knows a super ultra crazy secret trust no-one James Bond-like trick to solve this problem.
PEFY-P18NMAU-E (ducted indoor air handler)
PUMY-P48NHMU (outdoor unit)
TC-24 (central controller)