Gree "Crown" 18kBTU install

Xringer · 01-08-17, 08:35 AM

Last night I decided to set the Sanyo (den) 1 deg higher (20C/68F) than the Gree (main house at 67F).
Net result, the power use by the Gree was low and the Sanyo did 75% of the heating, until early in the AM when it got below about 10F...
At 5AM, the Sanyo was just blowing cold air and using 2.1KW! Turned it off.
Until the temp gets back up over 10F.. (Turned on Den space heaters).

Woke up again at 6:30ish AM:
The Gree was set at 67F, so it's bottom set-point ON level must be 65F..
Because living room was at 65F

! So I moved the setting up to 68F
and it came up blowing warm 108 deg F air.. Main house warmed up to 70F.

It got down to 2.8F at 7:37AM and the Gree was doing fine.
We did have one defrost around 8AM and it worked great. A loud whooshing sound signals when it's over.

Lessons learned.
Set both MS units to the same temperature. (or close den doors).
Set a 10F temperature alarm for shutting down Sanyo.
Set Oil heat back-up 4 degrees lower than Gree (center temp) Setpoint.

01-08-17, 08:35 AM	#11
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	Another chilly night.. Last night I decided to set the Sanyo (den) 1 deg higher (20C/68F) than the Gree (main house at 67F). Net result, the power use by the Gree was low and the Sanyo did 75% of the heating, until early in the AM when it got below about 10F... At 5AM, the Sanyo was just blowing cold air and using 2.1KW! Turned it off. Until the temp gets back up over 10F.. (Turned on Den space heaters). Woke up again at 6:30ish AM: The Gree was set at 67F, so it's bottom set-point ON level must be 65F.. Because living room was at 65F ! So I moved the setting up to 68F and it came up blowing warm 108 deg F air.. Main house warmed up to 70F. It got down to 2.8F at 7:37AM and the Gree was doing fine. We did have one defrost around 8AM and it worked great. A loud whooshing sound signals when it's over. Lessons learned. Set both MS units to the same temperature. (or close den doors). Set a 10F temperature alarm for shutting down Sanyo. Set Oil heat back-up 4 degrees lower than Gree (center temp) Setpoint. Attached Thumbnails __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..