LW1522ERSM
LG LW1522ERSM Window AC and ThinQ Service

Most common issues on this model
- Electronic control board and panel input
- Auto Cool speed selection
- ThinQ connection
- Coil frost and filter loading
- Compressor start on a large unit
Rated at 15,000 BTU for roughly 800 square feet, the LW1522ERSM is a legacy LG window air conditioner, an older model still in many homes. It lists ThinQ technology, three cooling and three fan speeds with Auto Cool, and easy electronic controls. LG also groups an FVSM and an IVSM version with it.
Since three versions are grouped, the label has to be read first. We then test the electronic controls, run Auto Cool through its range and check that every fan speed responds. The cooling checks follow: filter, coil, blower, capacitor and compressor start. Large units also need a sound outlet and cord, so we look at those. Parts are ordered against the model and serial on the label, with your approval of a written price beforehand.
Key features
- Window air conditioner with 15,000 BTU of cooling
- Estimated 800 sq ft
- ThinQ technology
- Three cooling and three fan speeds
- Auto Cool and easy electronic controls
Error codes this model can show
Are the FVSM and IVSM versions identical to mine?
They are listed with this model, but the hardware may not match. We read your label and work from that exact number. Matching by label avoids a wrong part and a second visit.
What does Auto Cool do on this unit?
It picks fan speed on its own to reach your set temperature. If it hunts or sticks on one speed, we test the sensor and the control board.
The buttons are unresponsive. Is it a board problem?
It could be the touch panel, a ribbon connection or the board. We test them in order, and you hear the result before any part is ordered.
Book repair for your LW1522ERSM
Book in about a minute, or call the desk. Same-day windows inside the Loop on most days, next-day across the rest of Houston.
