Keep this heat pump info coming! With a 3 month old new install that short cycles (.67 to 5min on) and then 5 minutes off constantly.... finding all this info helpful as I try to figure it out
Foind 2 issues. 1st problem was the blower speed running too slow causing high pressure shutting off the unit after so long. 2nd- thermocouple outside was hanging on by a strand (bad connectio,connection) causing the outdoor temp, I guess, to shut it off early. Now to figure out why the outdoor compressor turns on then off after 40 seconds when it's outdoor temp is lower than the limit, and preventing aux from turning on
I love the amount you guys invest in developing quality technicians. I feel blessed to work for a company that does that as well. It sets us apart from other companies as I'm sure it does the same for kilos. I always share your classes with my co workers to help us all grow and take our skill set to the next level.
@@sawdust85222 Bro, that's constructive criticism, you really don't seem to like what you do. Your answer should be: Thank you for the review, I will try my best to improve my teaching skills.
If you do want the system to have lower airflow in cool but not in heat you can remove whatever jumper you have for dhum and most all units will run at 💯 in heat mode
So on the second rule of thumb about the liquid line being however many degrees above the indoor temperature, would the return temperature work as a reference?
Plus 35° to your return temp will be a ballpark saturation for your high side pressure. Generally + or - 10° Example: 70° return plus 35° = 105° 105° saturation converted to pressure is 341 for 410A
I'm bothered by the fact that manufacturers are including subcooling in heat mode and it's not reliable or realistic numbers. It can be perfect in cool mode, but subcooling is way off in heat mode.
There are many factors that come into play like if the outdoor metering device is txv or piston and what the outdoor/indoor temperatures are and the indoor coil physical size will greatly affect subcool in heat mode. May be as little as 5-6 when it’s warm outside but be 20-40 when it’s colder
I’m having an issue with a conaire heat pump running extremely high pressures and temps on the unit this unit is a 95 model and I have replaced the filter drier also filter clean condenser coil clean evaporator no tru suction port to check the true readings on the heat pump and I need help the suction line is getting to 176 degrees tripping the high pressure that’s getting over 500 psig no restrictions at evaporator duct work if fine
Could be significantly less, if you have an exposed liquid line in an attic. Keep that in the back of your head too when referencing this rule of thumb. Cold attic air and a warm liquid line will always seek equilibrium. Also long run down an exterior wall. Even in covering. 👍
I recently had a call to a heat pump that wasn't heating. troubleshot the issue down to the meth head that rented from her a couple years previous broke clear the copper lineset (presumably for scrap value). Had to turn on her emergency heat (gas furnace) for her heat. simple to find, costly to fix.
Disagree with charging x amlunt per line length, becaise line diameter matters and the refrigerant type. Massflow for R134a wont be the same as R32. And them add required refrigerant velocity etc. Beat ia to way in but then after each 10-20 grams charged check superheat and suncooling and compressor amps
Keep this heat pump info coming! With a 3 month old new install that short cycles (.67 to 5min on) and then 5 minutes off constantly.... finding all this info helpful as I try to figure it out
Foind 2 issues. 1st problem was the blower speed running too slow causing high pressure shutting off the unit after so long. 2nd- thermocouple outside was hanging on by a strand (bad connectio,connection) causing the outdoor temp, I guess, to shut it off early.
Now to figure out why the outdoor compressor turns on then off after 40 seconds when it's outdoor temp is lower than the limit, and preventing aux from turning on
Pull out refrigerant and pull a proper vaccum and then fill to unit specs should be good has happened to me when in a rush
I love the amount you guys invest in developing quality technicians. I feel blessed to work for a company that does that as well. It sets us apart from other companies as I'm sure it does the same for kilos.
I always share your classes with my co workers to help us all grow and take our skill set to the next level.
WOOW, Your enthusiasm to teach is impressive, you seem to really like and excited to teach the HVAC profession. 😉😉🤔
Dude seriously lol, I love HVAC school content, but this guy has the "delivery" of a piece of dry boxed pasta
Where are your teaching videos?
@@sawdust85222 Bro, that's constructive criticism, you really don't seem to like what you do. Your answer should be: Thank you for the review, I will try my best to improve my teaching skills.
Lovely lesson for us northern guys that don’t see many heat pumps. Thank you
I LOVE having Craig's book to refer to.
🤔
They person in class saying some have a winter charging chart is correct. Good video. Love seeing the heat pump info.
Here in Oregon, there are a lot of heat pumps. Weighing out the charge is difficult due to cold temps trapping refrigerant trapped in the accumulator.
Great info., well covered, Thank you Brit.
Bert is a very very smart tech👍👍
I’ve also had it where a loose spade connector will cause the thermal fuse to open on the heat strips but you would fix that with a new heat kit
Rules of thumb...rule of thumbs.....hmm. Great video, thank you!
Good job professional, great 👍 👌 👏
Any discussion on the speed of the now Condener Motor to slow the motor down to increase the delta tee temperature?
If you do want the system to have lower airflow in cool but not in heat you can remove whatever jumper you have for dhum and most all units will run at 💯 in heat mode
I have Lenox that’s running a high head pressure I’ve cleaned the coil down and checked air filter
4:25 the exact moment when the dry erase marker demons show up LOL!!
😂
How many feet of line set is a factory charge charged for? Always 15 feet or does it vary from mfg to mfg? thanks df
Pulling air from supply? Or blowing thru supply?
So on the second rule of thumb about the liquid line being however many degrees above the indoor temperature, would the return temperature work as a reference?
Plus 35° to your return temp will be a ballpark saturation for your high side pressure. Generally + or - 10°
Example: 70° return plus 35° = 105°
105° saturation converted to pressure is 341 for 410A
I'm bothered by the fact that manufacturers are including subcooling in heat mode and it's not reliable or realistic numbers. It can be perfect in cool mode, but subcooling is way off in heat mode.
There are many factors that come into play like if the outdoor metering device is txv or piston and what the outdoor/indoor temperatures are and the indoor coil physical size will greatly affect subcool in heat mode. May be as little as 5-6 when it’s warm outside but be 20-40 when it’s colder
Compressure?
26:15 - 26:30
Good stuff 👍🏼
I’m having an issue with a conaire heat pump running extremely high pressures and temps on the unit this unit is a 95 model and I have replaced the filter drier also filter clean condenser coil clean evaporator no tru suction port to check the true readings on the heat pump and I need help the suction line is getting to 176 degrees tripping the high pressure that’s getting over 500 psig no restrictions at evaporator duct work if fine
The unit is r410 a also
I think the 100 to 110 over ambient is for condensing temp (liquid line temp) not discharge temp
Well done - good speaker
Bert is great. Is he a tech or a design engineer?
Could be significantly less, if you have an exposed liquid line in an attic. Keep that in the back of your head too when referencing this rule of thumb.
Cold attic air and a warm liquid line will always seek equilibrium. Also long run down an exterior wall. Even in covering. 👍
I find it even more with lines that run underground and that’s what they have a lot down there
Thanks for sharing video
Do you get ready in the morning bro? do you try to look like that?
Thanks for the information!!😉
🥃🥃🍺🍺🍺🏌🏻♀️🎯
Stay safe.
Retired (werk'n)keyboard super tech. Wear your safety glasses!
Watch it on 2x speed
Absolutely perfect!!
Thanks
I recently had a call to a heat pump that wasn't heating. troubleshot the issue down to the meth head that rented from her a couple years previous broke clear the copper lineset (presumably for scrap value). Had to turn on her emergency heat (gas furnace) for her heat.
simple to find, costly to fix.
Do a give away on a couple textbooks please
Great job "Bert" !!
I didn't know dane cook does hvac.
Disagree with charging x amlunt per line length, becaise line diameter matters and the refrigerant type. Massflow for R134a wont be the same as R32. And them add required refrigerant velocity etc. Beat ia to way in but then after each 10-20 grams charged check superheat and suncooling and compressor amps
Damn i feel cheated. My school was terrible compared to these guys.
He a boring teacher I’m sorry
Came some say Ferris bular. Damn monotonous voic.
camera guy, leave it alone!