FIGURE 40b
MENU TREE – CONTINUED
6. FURN HI PR SW – Indicates the
state of the High Pressure Control
(HPC) (also known as high pres-
sure switch) – either OPEN or
CLOSED.
7. GAS VLV
– Indicates the firing rate
of the gas valve. This value can be
low or high depending on the ther-
mostat demand.
8. GAS VLV RELAY
– Indicates the
state of the gas valve relay –either
ON or OFF. ON indicates that the
main gas valve solenoid is
engaged. Any time the indication is
4. IDM OUTPUT
– Indicates the state
of the Induced Draft Motor (IDM) –
OFF, HI or LO. The indication is
the state at which the furnace con-
trol expects the motor to be. If the
indication is HI or LO and the motor
is not turning, a number of prob-
lems could be the cause – including
a non-functioning blower relay on
the furnace control or a non func-
tioning inducer.
5. FURN LO PR SW
– Indicates the
state of the Low Pressure Control
(LPC) (also known as low pressure
switch) – either OPEN or CLOSED.
ON, flame should be present.
9. FLAME
– Indicates the pres-
ence of a flame. The possibili-
ties are “OFF”, “MARGINAL”,
“GOOD” and “UNEXPECTED”.
A marginal flame can be an indi-
cator that the flame sense rod
needs to be cleaned. “UNEX-
PECTED” flame is a serious
condition and must be dealt with
immediately by a professional,
licensed HVAC technician.
10. BLOWER CFM
– Indicates the
CFM that the furnace control
1 STG.
OFF
ON
A
B
C
D
BLOWER OFF DELAY
OFF
ON
A
B
C
D
HIGH HEAT HRS
LOW HEAT HRS
LOW HEAT CYCLES
HIGH HEAT CYCLES
BLOWER HOURS
TOTAL DAYS PWRD
HEAT ADJ
A
B
C
D
A
B
C
D
BLOWER OFF DELAY
LOW
HIGH
➤
➤
➤
➤ ➤
➤
➤ ➤
➤
NOTE: There may be a
delay of several seconds
when accessing user
menus or submenus.
This is normal.
53
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