low suc pres on R410 - http://www.hvacmechanic.com/ Forums
Original message
| wes377
 |  "low suc pres on R410"
, posted Wed 18 Jun 18:41  
I have a Train R410 system that had 25psi on low side and 225psi on high side outside temp 72 deg vapor line coming out of evap was 63 deg I thought it was low so added 1.5 lbs and low side stayed the same and high side jumped up to 375 could the txv be bad because it is frosted over. The acoil and filter is clean with good air flow. any thoughts
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Replies:
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| theduke03
| "Re(1):low suc pres on R410" , posted Wed 18 Jun 19:38
That definately sounds like a txv problem or a restriction at the txv.
"My dad was the most feared furnace fighter in Northern Indiana."
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| | hvacperson
| "Re(2):low suc pres on R410" , posted Fri 20 Jun 17:40
How about checking subcooling to verify if you have enough refrigerant in the system before diagnosing the TXV as bad...
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