Space Ray LTS Series Two Stage - Manual (Page 49)

Form #43155040
-48- May 2013
23.0)
TROUBLESHOOTING GUIDE
T
urn on line volt
age.
Does the green monitoring light come on in the junction box?
Y
es
No
Is there 120V between the L1 and L2 terminals on the terminal block in the junction box?
Y
es
No
Are the black lead wires of the green light securely on the terminals L1 and L2?
No
Y
es
Replace the green light.
Rep
air connection.
Check line volt
age
curcuit. Rep
air fault.
Adjust thermost
at to
the highest setting. Is the draf
t inducer
on?
Y
es
No
Is one lead wire of the draf
t inducer motor
securely on the terminal L2 in the junction box?
No
Y
es
Rep
air connection.
Is the other lead wire of the draf
t inducer
motor securely on the relay terminal 3 in the junction box?
Does the red monitoring light come on in the control cabinet?
Y
es
No
Rep
air connections.
Is the air hose securely connected to the air switch and the air sensing tubing at the draf
t inducer?
No
Clean out hose and probe.
T
roubleshooting
continued on the next page.
No
Y
es
Rep
air connection.
Disconnect the power and check motor lead wires.
Any wire
broken?
Y
es
No
Rep
air broken wires.
Check the blower wheel. Does it turn freely?
Y
es
Replace motor Check blower wheel. Is there any damage?
Replace blower wheel.
Readjust blower wheel on shaf
t &
retighten set crew
.
Check the air sensing tube and hose.
Are
they clear and unobstructed? Check the pressure at the air switch. Is it higher than the minimum required?
Rest
art
troubleshooting.
Is the fuse OK in the junction box?
Y
es
Y
es
No No
Y
es
No
Check the volt
age
between air switch terminal C and ground, is it 24 vac?
Y
es
Y
es
When the draf
t
inducer is running, is there 24 vac between air switch terminal NO and ground ?
No
Replace the fuse.
Is one red wire connecting relay terminal 5 and one terminal of the fuse in the junction box? Correct connection.
Y
es
Y
es
No
Y
es
Y
es
Replace the air switch.
No
Check the air int
ake
and vent.
Are there
any blockages?
Y
es No
Remove blockage. Rest
art
troubleshooting.
Is another red wire connecting the air switch terminal C and the other terminal of the fuse in the junction box? Is there 120V between terminal L2 and relay terminal 3?
No
Y
es
See sequence continued on the next page.
1
No
No
Correct connection.
No
See sequence continued on the next page.
2
While the draf
t inducer
is running, is there 24 vac between the terminals L1 and L2 in the control cabinet?
No
Y
es
Check for broken wires connecting between junction box and control cabinet. Replace the wires if necessary
.
Is the lead wires of the red light securely connected to the L1 and L2 terminals in the control cabinet?
No
Y
es
Rep
air connection.
Replace the red light.