Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Solar Sensor: Testing and Inspection

HEATING / AIR CONDITIONING: SOLAR SENSOR: INSPECTION

INSPECTION

1. INSPECT SOLAR SENSOR

(a) Disconnect the connector from the solar sensor.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

HINT: Use an incandescent light for inspection. Bring it within about 30 cm (11.8 in.) of the solar sensor.
If the resistance is not as specified, replace the solar sensor.