Honeywell CHRONOTHERM III T8611G User Manual page 7

Perform the following test as a check of all thermostat
functions. If thermostat does not respond as indicated, ther-
mostat must be replaced.
1. Press AHEAD and BACK keys at the same time.
While holding keys down, all segments of the display should
be on, see Fig. 10.
2. Set system switch to OFF. Press AHEAD and BACK
and PRESENT SETTING keys at the same time to enter
self-test.
3. Press each key as listed below, and look for response
listed, as key is held down and released.
Fig. 10—All segments on display.
SUN MON TUE WED THU FRI SAT COOL ON HEAT ON
WAKE LEAVE RETURN SLEEP TEMPORARY
REPL
AM
SET
PM
BAT
PT
M410C
System Press
Switch This
Position Key
OFF CHANGE
TO LAST
PERIOD
SKIP
NEXT
PERIOD
PRESENT
SETTING
COOL or
PRESENT
SETTING
AUTO (with
fan in AUTO)
PRESENT
SETTING
OFF
WARMER
COOLER
AHEAD
BACK
LEAVE
RETURN
(CHECK
EACH WAKE
POSITION)
OFF
SLEEP
DAY
SET
HEAT/COOL
SET
PRESENT
DAY/TIME
HEAT or
SET
PRESENT
AUTO
DAY/TIME
(with fan
SET
in AUTO)
PRESENT
DAY/TIME
SET
PRESENT
DAY/TIME
SET
PRESENT
DAY/TIME
OFF
HOLD
TEMP
RUN
PROGRAM
A HEAT displayed when system switch is in HEAT, COOL
when in COOL, HEAT or COOL when in AUTO, neither
when in OFF. Also, a four-digit code is displayed, with each
digit explained on the next page.
7
Look for this
Response
Key Down Key Released
03 Blank
07 Blank
15 Blank
15 Cooling, fan and
SYSTEM LED on.
15 Cooling, fan and
SYSTEM LED off.
06 Blank
02 Blank
05 Blank
04 Blank
01 Blank
00 Blank
12 See note A
08 Blank
13 Microprocessor
mask no. and
revision no.
09 Blank
14 Blank
1st stage heating,
14
fan and SYSTEM
LED on.
2nd stage heating
14
and AUX. HEAT
LED also on.
2nd stage heating
14
and AUX. HEAT
LED off.
1st stage heating,
14
fan and SYSTEM
LED off.
10 Blank
Normal operating
11
display.
END SELF-TEST
69-0348—1