a*****n
发帖数: 439 | 1 怎么知道和已有系统是不是存在兼容问题？
现在的是最基本的数字的，想换一个programable的。 |
f****i
发帖数: 20252 | 2 可以
【在 a*****n 的大作中提到】
: 怎么知道和已有系统是不是存在兼容问题？
: 现在的是最基本的数字的，想换一个programable的。
|
g*****9
发帖数: 4125 | 3 yes and no.
older units 兼容, newer unit is less 兼容.
heat pump use special kind.
【在 a*****n 的大作中提到】
: 怎么知道和已有系统是不是存在兼容问题？
: 现在的是最基本的数字的，想换一个programable的。
|
C*******d
发帖数: 15836 | 4 Be very careful when you do so. I bought a ~$20 programmable one from HD and
later found out that it actually didn't support heat pump heating. I found
this out when the last winter was almost gone. Eventually I bought a ~$50-$
60 unit which has been working very good. A big lesson for me.
Wire connection can be tricky for older units. It will be helpful if you
take pictures of the old connections just in case you have problems. Usually
the new thermostat manual should be clear enough to connect |
