SECTION 14: T
ROUBLESHOOTING
39 of 49
14.4 Troubleshootin
g
for Gas Valves
14.5 Troubleshootin
g
for Flue Blower
V
al
v
e faulty.
Replace with one of
correct type.
Fault elsewhere.
Correct pressure problem.
If problems persist, contact
Addison at
www.addison-h
v
ac.com
V
al
v
e Operating
TROUBLESHOOT ENDS.
N
o
Yes
V
al
v
e or ignition control
faulty. Replace with
one of correct type.
Does gas pressure at
outlet of
v
al
v
e return to zero or
lower when
v
al
v
e turns off?
N
o
Yes
Does gas pressure at outlet
of the
v
al
v
e rise when
v
al
v
e turns on?
N
o
Yes
Is gas pressure at inlet of the
v
al
v
e correct for gas type?
N
ote pressure found.
N
o
Yes
START
If problems persist, contact
Addison at
www.addison-h
v
ac.com
Blower Operating
TROUBLESHOOT ENDS.
N
o
Blower motor faulty.
Replace with correct type.
Check blower motor leads
for loose connections.
Correct power
supply problem.
Yes
START
Does
blower
turn on and
off while burner is firing
continuously?
N
o
Yes
Does flue blower run
automatically when there
is a call for heat?
N
o
Yes
For yo
u
r safety and optim
u
m heater performance,
u
se only gen
u
ine replacement parts sold and s
u
pplied
b
y Addison.
Conduct start-up procedure as shown
on Page 27,
S
ec
t
ion 11
.
Summary of Contents for UHA 150
Page 2: ......
Page 4: ......
Page 6: ......
Page 8: ......
Page 44: ...UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL 36 of 49 14 1 General...
Page 55: ...SECTION 16 SPECIFICATIONS 47 of 49 SECTION 16 SPECIFICATIONS 16 1 Dimension Data...
Page 58: ......
Page 59: ......
Page 60: ......
Page 61: ......
Page 62: ......
