DriSteem Vapor-logic 4 User Manual

1BHFt%3*45&&.7BQPSMPHJD*OTUBMMBUJPOBOE0QFSBUJPO.BOVBM
Table 85-1:
Troubleshooting guide (continued)
Humidity set point issues
Issue
Possible causes Actions
Humidity above set point. t )JHIFOUFSJOHSFMBUJWFIVNJEJUZ t %FIVNJEJGZ
t 6OJUPWFSTJ[FE t $POTVMU%3*45&&.
t 3FEVDFEBJSGMPX t $IFDLGBOTEBNQFST7"7TZTUFNTFUD
t *NQSPQFSMZMPDBUFEIVNJEJTUBUPSIVNJEJUZ
transmitters
t 3FMPDBUFVTJOHHVJEFMJOFTJO"QQFOEJYTFDUJPOPGUIJTNBOVBM
t .BMGVODUJPOJOHDPOUSPMT t $IFDLGPSJODPSSFDUTVQQMZWPMUBHF
t $IFDLGPSJODPSSFDUDPOUSPMTJHOBM
t $IFDLGPSJNQSPQFSXJSJOHIPPLVQ
t *GIVNJEJUZDPOUSPMMFSPSUSBOTNJUUFSBSFPVUPGDBMJCSBUJPOPS
malfunctioning, repair or recalibrate.
t $IFDLJG443DPOUBDUPSTIPSUFE3FQBJSPSSFQMBDFBTOFFEFE
t $POUBDUPS443JTTUVDLDMPTFE t 3FNPWFQPXFSGSPNIVNJEJGJFSJNNFEJBUFMZ$POUBDU%3*45&&.
Hunting (humidity swings
above and below desired set
point)
t .BMGVODUJPOJOHDPOUSPMTZTUFN t *GUIFSFJTBGBVMUZPSJOBDDVSBUFIVNJEJUZDPOUSPMMFSPSUSBOTNJUUFS
repair or replace.
t $IFDLGPSQSPQFS7BQPSMPHJD
control settings: RH set point, high
limit set point, cycle rate, PID tuning, etc.
t 3FMPDBUFQPPSMZMPDBUFEDPOUSPMDPNQPOFOUT4FFi4FOTPS
placement” on Page 26.
t 0O443VOJUT$POUSPMXJSFBOEQPXFSXJSFTNVTUCFQIZTJDBMMZ
separated from each other. If they are not, an induced control
voltage can occur, causing erratic operation.
t 7FSJGZUIBULFZQBEEJTQMBZNPEVMBSDBCMFJTJTPMBUFEGSPNQPXFS
wiring.
t "JSWPMVNFWBSJFTSBQJEMZ t 4UBCJMJ[F
t "JSUFNQFSBUVSFJTWBSZJOHSBQJEMZ t 4UBCJMJ[FUP'$
t1SPQPSUJPOBMCBOEJTUPPTNBMMBOEPSJOUFHSBM
gain (Ki) is too large
t *G3)TXJOHTPVUTJEF1*%CBOEJODSFBTF1*%CBOEVTJOHUIF4FUVQ
menu.
t %FDSFBTFJOUFHSBMHBJO,JVTJOHUIF4FU6QNFOV
t 0OPGGDPOUSPMJTOPUBEFRVBUF t *GDPOUSPMMJOHUIFIVNJEJGJFSXJUIBOPOPGGTJHOBMDPOTJEFS
changing to controlling with a modulating signal.
Continued
5SPVCMFTIPPUJOHHVJEF
Operation

DriSteem Vapor-logic 4 Specifications

General

Brand	DriSteem
Model	Vapor-logic 4
Category	Controller
Language	English