Amana GUIA Series Service Instructions Manual page 128

SERVICING
STYLE 1 & 3
STYLE 2
Primary Limit Control Styles
(80% Furnaces)
All 90% furnaces use a nonadjustable, automatic reset,
Klixon type limit control part number 201629_ _. Refer to
the following drawing for location of the primary limit on the
90% furnaces.
PRIMARY LIMIT
CONTROL
* * *
*
2
*
* *
Primary Limit Control Location
(90% Upflow Furnace Shown, Counterflow Similar)
The following drawing illustrates the style of limit switches
used on the 90% furnaces.
FRONT VIEW
Primary Limit Control Style
(90% Furnaces)
128
Rev. 1
Disconnect Electrical Power Supply:
1. Remove burner compartment door to gain access to the
2. Remove low voltage wires at limit control terminals.
3. With an ohmmeter, test between these two terminals
ENCLOSED DISK
4. After completing check and/or replacement of primary
5. Turn on electrical power and verify proper unit operation.
To aid in identifying these controls, refer to the T.O.D. Pri-
mary Limit Charts in furnace Technical Manual for style num-
ber, temperature setting and sleeve color(s) code.
SIDE VIEW
WARNING
primary limit.
as shown in the following drawing. Should read continu-
ous unless heat exchanger temperature is above limit
control setting. If not as above, replace the control.
Volt / Ohm
Meter
Testing Primary Limit Control
(80% Furnaces)
VOLT / OHM
METER
Testing Primary Limit Control
(90% Furnaces)
limit control, reinstall burner compartment door.
COLOR
IDENTIFYING
SLEEVES
COLOR
IDENTIFYING
TAB