Warmer Drawer (Some Models) - Frigidaire GLCS378DSA Service Data Sheet

WARMER DRAWER (SOME MODELS)

COMPLETE CIRCUIT
When the Warm and Serve Drawer is first turned on, a "Preheat" circuit is established to provide full power (120
volts) through the lock switch, L1 to H1 of the warmer switch, the warmer element and the preheat thermostat.
PREHEAT
When the temperature at the preheat thermostat reaches 130°F the thermostat opens. This forces the current to flow
through the parallel circuit which contains the diode. The diode allows only half power (every other pulse of electric-
ity or pulsating DC) to flow through the element, resulting in lower heat output by the element. The infinite heat
control switch will cycle as necessary to maintain the temperature in the drawer as indicated by the control switch
setting. If the control is placed on a lower setting, it is possible for the temperature in the drawer to drop enough to
allow the preheat thermostat to close again which will allow the element to reenter the "Preheat" mode at full
power.
AFTER CUT-OUT
SAFETY
THERMOSTAT
An indicator lamp wired in parallel with the element is illuminated whenever the control switch is turned on.
WARMER DRAWER
INFINITE
SWITCH
WARMER
DRAWER
INDICATOR
LIGHT
WARMER
DRAWER
DIODE
ELEMENT
6
WARMER DRAWER
INFINITE
SWITCH
N
N