
TROUBI^E SIIOOTING
The Compact IOO furnacre delivers the best in reiiabiliff. However, a faiiure is always
.possible.
Mufle
The "oven-ono lamp is lit but temperature drop* steadily. Remove the top panel and
check resistance at the muffie rryith an ohrnmeter'
The normal ievel is 40 ohms {*hm rating l}.
If the resistor is dama$ed, replace the muffle according to instructisns in the ehapter on
mu-ffle replaeement.
Pyrometer
Tire therrnocouple. af the S type (platinum ' !1"/" rho{ium platinum), pratically
eliminates problerns of wear.
However, damage can be caused by a mechanical impacl in which case the security
sysrem become operative and the rnessage oD SNDU (thermoccuple failure) is displayed
ir,@
Check that thermocouple wire is not ciiseonnected and that resistsnce resding is csrrect'
{using an ohmmeter}.
Replaee thermoeoupie if necessary-
Platform drive notor:
Dlrect current motor with speed reductor-
Por*'er supply g v 1*0 rnA- If piatfarm does not lift, check po.wer supply ts motor'
if the g 11 electrical pewer is reaching the rnuffle terminais {red and blue wites), then
replace motor, as inriieated in chapteF on motor replacement.
Piug-in electronic control station
The piug:in contrcl station !s. controiles by a microprocessor'
-Ifis u,-:it is highiy reiiabie and efficient, but in rare cases of severe eiectrical
iaterfer'ence istcrms or overvoltafle, for example) it may be affected.
No:-ma! cperatia.r: is rrsually restcred by disecnnecting the irrnaee i-or a minute-
Il ineorrect ualues a.re displayed:
This rna3r bs caused by a lof,* af randorr: aceess melnory {eontaining baking
pararnetersi.
lhis sonietim€s occur*q when lhe ascumulators is discharged (after a pericd of over fl('o
mcnihs) qr when electrieai interference is severe
The c.onrroi siaticn becomes operational again once baking parameters have u'een
reeniered.
To clo this, use ti'.* @ ilil kev as expiained previously'
.6a r--.
Fu-l each :1icofye{i paparneter, first press t<ey L# '1}i to sei maximum value' then
cecrease il-zis value by using i.*V S f*
ii= incorreci t€snperafi:re is dieptayed
C*eek ihat the caiibration setting is between 1 rnd L0'
.?,eacijust the s€tiiftg if necessary'
?liae of the furnace
Ti:e hea'ring ele:nent is regulated -by a "iriac't. If there is a defect, the computer will find
-iire problem and wil! shcw "Problem in temFerature" {DF TMP}'
Check the *;nction of the "triscn and chan6e if n-ecessary'
Triac of pump
System identica! tc ."triac" of muffle-
!i is situated in the back of furnace, just above the pump electric socket,
if the purnp rvorks eonstantly, even with llght "Pump-on", check the "triac" afid replaee
:t :f necessary,
COT{PTJTBRIZED FORCEI"EIN F'URNACE
:NffRUCTIGN MF.NUAL COE{PACT lOS Pa€€ 15