Amana GUIA070A30 Service Instructions Manual page 60

GUIV Example 3: Initial Call For Low Heat, Change In Call To High Heat
Air
High
Circulator
Low
Blower
Off
Gas Valve On
Off
Ignitor
On
Off
PS2 Closed
Pressure
PS1 Closed
Switches Open
High
Induced Draft
Low
Blower
Off
High
Thermostat
Low
Off
GUIV Example 4: Initial Call For High Heat, Subsequent Call To Low Heat
Air High
Circulator
Low
Blower
Off
High
Gas Valve Low
Off
Ignitor
On
Off
PS2 Closed
Pressure
PS1 Closed
Switches
Open
High
Induced Draft Low
Blower Off
High
Thermostat
Low
Off
60
Rev. 2
SYSTEM OPERATION
Timing Charts For GUIV Variable Speed Two Stage
Integrated Ignition Control Operation
0 10 27 31 34
0 10 27 31 34
Call Change to High Heat
64 94 0
Call Change to Low Heat
30 Seconds After Call Change to Low Heat
64 94 0
5 30 60, 90
120, or
180
5 30 60, 90
120, or 150, or
180
90, 120,
150, or
210
90, 120,
210