American Standard Heat Pump Error Codes
Complete list of American Standard heat pump error codes with causes and how to fix them.
172
🔴
American Standard Heat Pump error code 172: Ignition lockout.
Technician Required
173
🔴
American Standard Heat Pump error code 173: Rollout switch lockout.
Technician Required
174
🔴
American Standard Heat Pump error code 174: Low pressure switch lockout.
Technician Required
175
🔴
American Standard Heat Pump error code 175: High pressure switch lockout.
Technician Required
177
🟢
American Standard Heat Pump error code 177: Limit switch open.
✓ DIY Possible
178
🟢
American Standard Heat Pump error code 178: Inducer motor fault.
✓ DIY Possible
179
🔴
American Standard Heat Pump error code 179: Flame sensor failure.
Technician Required
180
🟢
American Standard Heat Pump error code 180: Pressure switch open at start.
✓ DIY Possible
226
🔴
American Standard Heat Pump error code 226: Low gas pressure.
Technician Required
227
🔴
American Standard Heat Pump error code 227: High gas pressure.
Technician Required
E01
🟡
American Standard Heat Pump error code E01: Communication error.
Technician Required
E02
🟢
American Standard Heat Pump error code E02: Outdoor ambient sensor failure.
✓ DIY Possible
E03
🟢
American Standard Heat Pump error code E03: Outdoor coil sensor failure.
✓ DIY Possible
E04
🟢
American Standard Heat Pump error code E04: Discharge temperature sensor …
✓ DIY Possible
E05
🟢
American Standard Heat Pump error code E05: Suction temperature sensor failure.
✓ DIY Possible