It's not a real serious problem. It is working fine, until I try to increase
the temperature in a large increment. Like calling for 74, from 66.
It's going to be 66 in the morning, so we have to set it to 68, wait for
it to get there, then set it to 70, wait and so on.
When a large change is requested, the power usage exceeds the normal max of 2.5 KW,
as the compressor & fans run at highest speeds and start delivering a massive heat output.
When the power usage hits 3 KW, my power monitor alarm goes off
and I have to push the down (temperature) button to slow it down.
Otherwise, the overload is sensed by the outdoor unit and it resets itself (at about 3.5 kw).
I'm not sure, but I think the OLR 'overload relay' drops out the main 'power relay' for just a second and the power input blinks,
like it was a power line glitch. It just starts right back up and if the living area isn't close to the target temperature, it starts power hogging again..
http://i46.photobucket.com/albums/f1...CL/outdoor.jpg
I get the feeling the controller board thinks it's installed in a 3 ton, instead of a 2 ton unit..
Anyways, Sanyo tech support thinks it might be "a problem with the charge in your system"
and wants some off and running pressure readings.
The wide tube is where the charge/service port is, And since the flow switches direction when heating vs cooling,
I'm wondering if measuring in both AC and heating modes will be like measuring the High and low sides?? (on the single charge port).
Maybe:
1. System off, wide tube valve off, hook up gauge, open valve and measure cold pressure.
2. Run Heat for 20 minutes and measure while still running.
3. Run Cool for 20 minutes and measure while still running.
4. Sanyo Off, valve off, unhook gauge & cap & valve back to open again.
5. Record exact outdoor & indoor temperatures.
I've found the pressure performance charts in the service manual, so I'll know what pressures to expect.
http://sanyohvac.com/assets/document...SeriesRevB.pdf
YES! pages 21 & 22. Cooling about 117 PSI and heating around 400 PSI, depending on the inside and outside air temperature.
There's the old High and Low side.. Right??
Edit: That label just tells the Design Pressure..
http://i46.photobucket.com/albums/f1...r/NCL/F106.jpg