What It Means
- The top cap switch has opened 5 times within one hour. As a result, the outdoor unit is locked out.
Lennox Split & Multi-Split
Lennox Error Code E442
Split & Multi-Split: Air conditioner (outdoor), Heat pump (outdoor)
Causes & actions from Lennox
How it shows
- Outdoor control 7-segment display: E442
When compressor thermal protection sensor opens 5 times within 1 hour, outdoor stops working. To clear, disconnect power to the indoor unit (24VAC power source to the outdoor control) which will power off the outdoor control and will open the outdoor unit contactor, which interrupts power to the inverter and then re-apply power.
Other manual wording
EL18XCV, EL18XCV-024, EL18XCV-036, EL18XCV-048, EL18XCV-060, EL18XPV, EL18XPV-024, EL18XPV-036, EL18XPV-048, EL18XPV-060, EL19KPV,…
When compressor thermal protection sensor opens five times within one hour, outdoor stops working. To clear, disconnect power to the indoor unit (24VAC power source to the outdoor control) which will power off the outdoor control and will open the outdoor unit contactor, which interrupts power to the inverter and then re-apply power.
Applicable models & manual sources
- EL18XCV
The top cap switch has opened 5 times within one hour. As a result, the outdoor unit is locked out.
EL18XCV, EL18XCV-024, EL18XCV-036, EL18XCV-048, EL18XCV-060
- EL18XPV
The top cap switch has opened 5 times within one hour. As a result, the outdoor unit is locked out.
EL18XPV, EL18XPV-024, EL18XPV-036, EL18XPV-048, EL18XPV-060
- EL19KPV
The top cap switch has opened 5 times within one hour. As a result, the outdoor unit is locked out.
EL19KPV, EL19KPV-024, EL19KPV-036, EL19KPV-048, EL19KPV-060
- EL21KLV
The top cap switch has opened 5 times within one hour. As a result, the outdoor unit is locked out.
EL21KLV, EL21KLV-024, EL21KLV-036, EL21KLV-048, EL21KLV-060
- EL22KCV
The top cap switch has opened 5 times within one hour. As a result, the outdoor unit is locked out.
EL22KCV, EL22KCV-024, EL22KCV-036, EL22KCV-048, EL22KCV-060
- SL22KLV
The top cap switch has opened 5 times within one hour. As a result, the outdoor unit is locked out.
SL22KLV, SL22KLV-024, SL22KLV-036, SL22KLV-048, SL22KLV-060
- SL25KCV
The top cap switch has opened 5 times within one hour. As a result, the outdoor unit is locked out.
SL25KCV, SL25KCV-024, SL25KCV-036, SL25KCV-048, SL25KCV-060
- SL28XCV
The top cap switch has opened 5 times within one hour. As a result, the outdoor unit is locked out.
SL28XCV, SL28XCV-024, SL28XCV-036, SL28XCV-048, SL28XCV-060
- EL18XCV
The top cap switch has opened five times within one hour. As a result, the outdoor unit is locked out.
EL18XCV, EL18XCV-024, EL18XCV-036, EL18XCV-048, EL18XCV-060
- EL18XPV
The top cap switch has opened five times within one hour. As a result, the outdoor unit is locked out.
EL18XPV, EL18XPV-024, EL18XPV-036, EL18XPV-048, EL18XPV-060
- EL19KPV
The top cap switch has opened five times within one hour. As a result, the outdoor unit is locked out.
EL19KPV, EL19KPV-024, EL19KPV-036, EL19KPV-048, EL19KPV-060
- EL21KLV
The top cap switch has opened five times within one hour. As a result, the outdoor unit is locked out.
EL21KLV, EL21KLV-024, EL21KLV-036, EL21KLV-048, EL21KLV-060
- EL22KCV
The top cap switch has opened five times within one hour. As a result, the outdoor unit is locked out.
EL22KCV, EL22KCV-024, EL22KCV-036, EL22KCV-048, EL22KCV-060
- SL22KLV
The top cap switch has opened five times within one hour. As a result, the outdoor unit is locked out.
SL22KLV, SL22KLV-024, SL22KLV-036, SL22KLV-048, SL22KLV-060
- SL25KCV
The top cap switch has opened five times within one hour. As a result, the outdoor unit is locked out.
SL25KCV, SL25KCV-024, SL25KCV-036, SL25KCV-048, SL25KCV-060
- SL28XCV
The top cap switch has opened five times within one hour. As a result, the outdoor unit is locked out.
SL28XCV, SL28XCV-024, SL28XCV-036, SL28XCV-048, SL28XCV-060
Disclaimer: This information is for general reference. Code wording and instructions vary by model. Always follow the service manual for your exact unit.
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