Hey Guys,

I don't normally post on the forum but enjoy searching through it. Though I am unable to find any information to help with this issue. I only have some of the specific information that I may need, but let me know if I need any more that will help.

Unit: 15-20 yr old R22 Ducted unit - Has had a reversing valve change about a year ago.

Issue: Our tech that visited the job says the air conditioner ran on cooling, pressures were about 60-70PSI suction, 250PSI Discharge on a 30 degree (celcius day). The issue shows when the unit is switched to heating, and the discharge pressure rises very quickly until the unit cuts out due to the high pressure safety. You can hear the reversing valve swoshing when changing between heating and cooling, the coil is fine.

I'm honestly at a lose at what would cause this issue, so any nudge in the right direction would be very appreciated!

Cheers,
- Cory