FieldBench
Amana codes

Amana

LPS / freeze

Lockout

Low pressure

Charge, indoor airflow, metering.

Walk LPS / freeze in Diagnose

2 plates — walk the one on the cabinet

First check

1 Airflow and freeze before you add gas

On Amana ALXS4B low pressure / freeze is indoor airflow or a starved coil until proven otherwise. Filter, blower, dirty A-coil, closed supplies. In heat mode, a iced outdoor coil is the same family. Do not add gas on a frozen coil. Indoor filter/coil first.

Expect: Indoor air moving. Coil not iced. OD coil clear in heat.

The rest of the walkthrough is Diagnose.

On the plates

  • Do not add gas on a frozen coil. Indoor filter/coil first.

Plates that use LPS / freeze

Same number, other makers

LPS / freeze on Amana is not the same code on these plates.