Trane S8V2C080M5PC User Manual

S8V2-SVX001-1A-EN
65
Correct applicaon or
duct issues.
Check operaon
YES
Is heat rise
within
specificaon?
See Nameplate
Is return air
temperature
above 85 F?
NO
Return air
temperature is
above max limit
YES
Check for loose
insulaon or other
objects within
furnace air stream
NO
Is outlet
manifold gas
pressure within
specificaons?
YES
Correct gas pressure
Check operaon
NO
Is temperature at
high limit above the
switch seng?
YES
Replace high limit
switch
NO
YES
DEFINITION
Limit switches are safety devices
that will open when an abnormal
high temperature has been sensed.
REMOVE ALL JUMPER WIRING TO
SWITCHES!
Under no circumstances, shall these
switches be le jumpered when not
troubleshoong.
Verify filters and blower wheels are
clean
Make sure any temperature
measuring devices
(thermocouples, dial
thermometers) used to
esmate limit temperature are
within ¼ inch of limit disc
Make a call for 1 stage heat
4.0 Fault Code
Main Thermal Limit
st
Is 24 VAC
measured across
main thermal
limit?
Is external stac
pressure greater
than nameplate?
NO
YES
Note:
Furnace will need to be checked
in both 1 & 2 stage operaon.
st
nd
TTrroouubblleesshhoooottiinngg

Trane S8V2C080M5PC Specifications

General

Brand	Trane
Model	S8V2C080M5PC
Category	Furnace
Language	English