craft 2 ton heating mode problem

[kefah]

hi
i have 2 ton craft split unit
it had leak so i repair it
when i charged the system
it work peftectly in cooling mode
11 a current
40 psi suction line pressure
but when i change it to heating mode
the discharge pressure increases gradually
starting from
8 ampere
100 psi
reaching 475 psi
and current reach 25 a
so compressor start opening relief valve
so pressure decrease to 350 psi then increase to 475 psi
so what is the problem
i checked both capillary tube and filter in outdoor unit they are working very good
voltage is 220 v
can it be blockage in the indoor unit

[kefah]

up

[KB Cool]

40 psi seems a little low! Maybe your indoor coil is packed with dirt!!!!

[beenthere]

What refrigerant are you using.

[Snapperhead]

maybe insulation came off indoor unit and blocking coil

[kefah]

40 psi seems a little low! Maybe your indoor coil is packed with dirt!!!!

i cleaned it
and i charged it to 50 psi

[kefah]

What refrigerant are you using.

arkime freon 22

[kefah]

maybe insulation came off indoor unit and blocking coil

can you explain more

[mason]

hi
i have 2 ton craft split unit
it had leak so i repair it
when i charged the system
it work peftectly in cooling mode
11 a current
40 psi suction line pressure
but when i change it to heating mode
the discharge pressure increases gradually
starting from
8 ampere
100 psi
reaching 475 psi
and current reach 25 a
so compressor start opening relief valve
so pressure decrease to 350 psi then increase to 475 psi
so what is the problem
i checked both capillary tube and filter in outdoor unit they are working very good
voltage is 220 v
can it be blockage in the indoor unit

Kefah you have enough posts to apply for pro membership, in the locked pro forum you can get detailed technical info for anything you ask.

[Snapperhead]

Does the indoor unit have options for fan speeds ?

When you turn on heat , make sure the fan is blowing on high

Never heard of a Craft .... but on older units , the insulation inside the air handler itself will begin to fall apart after years of operation.

[kefah]

Kefah you have enough posts to apply for pro membership, in the locked pro forum you can get detailed technical info for anything you ask.

thanx
i will try it

[kefah]

Does the indoor unit have options for fan speeds ?

When you turn on heat , make sure the fan is blowing on high

Never heard of a Craft .... but on older units , the insulation inside the air handler itself will begin to fall apart after years of operation.

yes i choose high speed
but it automatically
start with low speed then full speed

[kefah]

the cause was reversing valve
i changed it