ReplyTwilli says what was your super heat?
Professional Member
ok...It seems all I have is Warm suction line problems this summer. Another tech went and serviced/cleaned a unit last Thursday. From what he says when he left pressures were correct and unit was running fine. Customer says later that night it was not cooling and there was not any warm air coming out of condenser. Tech went out of town on vacation and called me to check it out. When I arrived today, pressures were 10 on low side and 150 on high side. Of course suction line dry and warm. I didn't want to just add gas right away so checked capacitor for full charge and checked compressor amps. Both checked out ok. Added gas. Appears unit was completely empty of freon. Got pressures to close to correct readings of 65 and 275 (86 degrees outside). However suction did not get cold. Temp out of vents inside house only coming out at 76 degrees. Evap coils nice and cold but not frosting. Filters clean, a-coil clean, returns not blocked. Is this another restriction problem?
Why are the guages correct, did I just overcharge system? and if unit was that empty of freon that quick as of Thursday must be a leak in system. Couldn't find leak with leak detector.
Membership Committee*
Twilli says what was your super heat?
No Heat No Cool You need Action Fast
Professional Member
Odds are there was a leak in system and when your partner charged the system back up it opened the leak worse. If it leaked out, there is a leak there. How warm was it in the house?
If you can't do it right.....Don't do it!!
God Speed, Jim. We'll miss you - 2-26-23
Must be a 35 year old unit that you need head pressure that high on an 86° day.
As above. What was the Sh, and SC.
What ws the indoor wetbulb.
Professional Member
It was 88 in the house.
According to homeowner, the other guy supposedly did not add any gas to the system.
He went there for an annual cleaning/servicing, everything supposedly checked out fine, he cleaned unit, and then problems occurred. I have to make assumptions, as I haven't discussed with other tech but just got a quick call from him to check out problem.
I didn't measure the superheat.
Professional Member
Goodman, 4-ton- 3 yrs old.
I've always relied more on the pressures than reading SC SH.
Guess I need to make SC SH part of routine checks.
Professional Member*
Yes you do...Originally Posted by kg321
I need a new signature.....
Professional Member*
Piston or TXV?
I need a new signature.....
Membership Committee*
Twilli says pressures are just a part of the puzzle
No Heat No Cool You need Action Fast
Professional Member
Piston.
I'm learning that twilli always has great 1 line advice.
Regular Guest
and temps are another piece of the puzzle
Professional Member*
But that beats no line advise unless jokers are wild.
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Regular Guest
Twilli is very funny with his one liners
Professional Member
I'm thankful for any and all info here.
This is just the best ever to have all of this knowledge at your fingertips.
Regular Guest
it sounds like you are still undercharged,but you need to check your sh or sc.
Professional Member*
Pressures alone tells us absolutely nothing except that there is something in the system or not.
Training is important!
Practical Training is a must!
Professional Member
At 65 on low side, even if still a little undercharged, would'nt suction line be sweating, cool, or something. If I add more gas, the head pressure will continue to go up.
Professional Member*
You need to get accurate temperatures of refrigerant tubing before anyone can tell anything. This is why there are T/P (Temperature/Pressure) charts. One without the other is meaningless.
Training is important!
Practical Training is a must!
Membership Committee*
Twilli says 3 more post and you can apply for pro membership
No Heat No Cool You need Action Fast
Professional Member
I like the way Twilli thinks.....
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