Alright, Im working on a coleman heat pump installed in 1989.
Outdoor: Model# 4536C901 Serial# 108932688
Indoor: Model# 4536A630 Serial# 019031580
The problem is there unit keeps going out on high head pressure and switching to emer. ht. 7/8 supplies are open, filter is clean, coil clean, can feel good air out of the supplies.
Return air: 78
Evap TD: 14
Cond TD: 49
Air td: 25
My supply air is at 103
This is when it was stabled out. It seems to run at the above head pressure for awhile then go up to 350 and cut out. The way the piping is set up into the indoor coil is different then what ive ever seen, but im also a newbie. The txv and a cap tube are piped parallel to the distributer. problem is what looks like the cap tube for the sensing bulb is cut off and there is no sensing bulb. (looks like it was how it was meant to be). There hasnt been any work done on it in a couple years and it was just maintenance when something was done. So thats about where im at right now, if anyone can explain the piping or just any advice at what to look at for the problem let me know. Ill be on quite frequently. thanks a lot, hope I gave enough info if you need more ill find out asap.