Heat Controller PE-91A PE-121A - Manual (Page 12)

NOTE: To toggle the displayed temperature between °C and °F, press the
ON/OFF button for approximately 20 seconds and then release. (The °F printed
on the Control Panel will remain unchanged.)
.
12
Heat Controller, Inc.

1900 Wellworth Avenue

Jackson, MI 49203
OPERATION 9.
9.1 Control Panel and Display
Dry Mode