24 Volts
Suppl~d
To
GIIS
V
...
lve
During
Ignifjon-
No
Main Gas
Flow
a.
Gas valve may
be
detective. Replace
if
necessary.
b Gas prplng may be plugged, Check
to'
adequate gas
supply
to
gas valve at
uniOn
Bur".,
Short
Cycling
_
Thermostat Calls
for
Heat.
limit
Switches
Closed
a,
Check
101
polanty.
b.
Check ground,
c,
Check
flue,
d Check combustron
aor.
e Check gas pressure
'- Check orillee
g,
Check the position
of
rgnitor. a normal reading should
be
40·75 ohms.
Bur""r
Ftame
Without
Motor
Running
a.
Gas valve stuck open, check gas valve lor proper
ope,allon (replace
~
necessary) and rnspect heat
excnaoger.
b Check lor 115 volts to the combustion blower mJlor:
,eplace
If
necessary
c
11
no power
10
combuSlron blower then check wrring
and control module: replace
II
necessary.
Bur"",DfH'rates-
Insufficlllnt
Hf//lt
a.
Check lhermostal lor proper settIng and locatoon.
Tnermostat shoulO
nOI
be
located where
.t
wrN
be
alfected by another near source
b.
Cneck for clean hlter and proper air flow.
c.
Check burner lor proper gas firing rate
d.
Be
sure untt
IS
not undersrzed for Its tnefmalload.
e Cneck the,mostat anllClpalor The nomlnalanllC,pator
setting
is
0
4,
Circulation
Air
Btower Will
NOI
OfH'ratf/ Even Though
The
Burne,
Does Operate
a Sel tne On-Off·Fan swtlch
ro
the
"FAN'
position. It the
Olower operates. check for a detective fan
SWIlch
b Check
wl"ng
to
molor
c Check for a detect,ve motor,
ADDITIONAL OIL
FURNACE MAINTENANCE
In additIOn
to
rhe preceding, Ihe
follOWIng
should be
pe~ormed
by a qualltied
serVlCe
contractor
at
least ooce each seasonlor
oll·lired furnaces:
a.
Replace the
011
nozzle
WIth
tM
fype nozzle specil,ed
lor
your lurnace
b.
Clean,
adJusr
and replace
II
necessary Ihe
spa~
electrodes.
c,
Reset
tM
nozzle/drawer assembly
ro
factory
specillCalions.
d.
Clean the Inside
oltne
lurnace heat exchanger and
replace the combust,on I.ner il necessary.
e.
Clean
or
replace tile otl hirer element
at
the odtank.
f.
Adjust the burner lor top elticieocy and Check to make
sure all f.tflngs are leak-tight.
-------
NORDYNE -
manufacturer
of
Inlenherm
and
Miffer
products
------------
120 Volls Is AvaUable
At
AMP
Plug-
Ignitor
Does
Not
Heat Up
a,
Drsconnect power fo the lurnace
b,
Dtsconnect AMP plug
ro
the Ignitor, and check 'gmfor
resrsrance
With
an ohm meier. Set
on
RX1
scale.
• Normal reading should
be
40·
75 ohms,
•
If
above or below
thiS
ratl","
at
rOOm
temperafure
change ignl10r
c Check for cOnllnully from Ignrtor receptacle to burner.
Combustion
Blower
~s
Run
- No Fillme
a.
Delec1ive
centr~ugal
swilch.
• CheckIhe operallOnol cenlrifugal switch by removing
end bell
01
the burner motor,
• Clean contacts
01
molor
•
II
Ihe conlacts are closed, replace the mJtor.
b,
Burner
,n
purge mode - allow
:<
mlnules lor Ilame
establishing period,
c Check
lor
properelectncal connections al purge lImer,
control
box,
or
gas valve,
d.
Check
lor
gas
supply-
gas line valve on, control lever
00.
Conl,ol
Module Status
Indicator
a.
One tlash - the control
IS
in Iock·out because Ihe
inducer pressure
SWItch
Is
or
was stuck closed
b.
Two
flashes·
the control
IS
111
lockout because tile
Signal was not received by the control that tile Inducer
pressure sWllch had
dosed
wltllin the lime.
c.
Three flashes- the
control,"
In
lockout because a
failed 'gnilion atfempt, a gas valve error.
01
a false
flame
senseddu"ng
thewarmuppenod.
Iffatseflame
has been sensed. file control
wtR
return
to
normal
operanon, and repeat IgnitIOn sequence when the
lalse flame
IS
not present.
d Four flashes- fhe control is
in
lockout due to a failure
wlth,n the control board
Control
Module
Is
Powered-
Ignitor
Does
Not
Heat
Up
a DtsconneclIgnllorleadsal AMP receptacle and check
lor
120 volts
at
the plug durll1g ignition sequence
b.
Replace igntlton conlrol
~
120volts is notavailable at
AMP plug during ignitIOn sequence.
Main Flame
Ignlles-
Burner
L=k.s
Out
a.
Ignilion control
rs
not properly grounded.
b.
DefectNe ignmon control.
c Improper
pola"ty
of 120
vOlt
power supply
d.
Ignitor has harrllne crack.
e.
Impropergas pressure
or
burner arr adlustment is not
allOWIng
Ilame
to
contact
Ignitor
up
lor
tlame
rectIficatIOn.
t.
Misafrgned rgnitor does not allow flame
10
contact
rgnitor
trp
tor lIame rect,flcallon.
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