Airdach ACTH2418VG1-D, Technical Manual

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R410A 17.5 SEER Inverter Split System Technical Manual
17. Error code: P11:T2 high temperature protection (Heating mode)
（
1
）
Works:
a) When T2 averages >145°F for a period of time,
stop the compressor and display error code P11 for at least 30s;
b) When T2 <122°F, the protection is released.
The compressor's three-minute delay protection is effective.
（
2
）
Effect: Prevent the four-way valve from being powered down and not recovering, jamming, or
inserting the wrong end of the four-way valve.
（
3
）
Solution: When checking the cooling, the four-way valve coil is still energized. If yes, please check
if there is any problem with the coil wiring. If not, proceed to the next step. Check if the four-way valve
is normal or not, and if the valve body is stuck.