Table of Contents
Advertisement
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 season lor
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.
•
Check Ihe 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 Dtsconnecl Ignllor leads al AMP receptacle and check
lor
120
volts at the plug durll1g ignition sequence
b. Replace igntlton conlrol
~
120volts is not available 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. Improper gas 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.
Hide quick links:
Advertisement
Table of Contents
