Installation guide

DRI-STEEM Vapor-logic

*OTUBMMBUJPOBOE0QFSBUJPO.BOVBMt1BHF

Table 95-1:

Vapor-logic

troubleshooting guide

Problem Possible cause Action

Reduced or no output (even though

water level is correct).

&MFDUSJDVOJUT

t )FBUFSNBMGVODUJPOJOH

t 7FSJGZUIBUQSPQFSWPMUBHFJTCFJOHBQQMJFEUPIFBUFST

t 7FSJGZIFBUFSBNQFSBHFNBUDIFTXJSJOHEJBHSBN

t *GIFBUFSDPOUBDUPSJTOPUGVODUJPOJOHSFQMBDF

&MFDUSJDVOJUT

t .BMGVODUJPOJOHDPOUSPMTZTUFN

t $IFDLJGIFBUFSGVTFTBSFCMPXOBOESFQMBDFJGSFRVJSFE

t $IFDLJGBVYJMJBSZMJNJUDPOUSPMTBSFOPUBMMPXJOHTZTUFN

to operate, e.g., duct humidistats, airﬂow proving switch,

etc. Reset, replace or calibrate as needed. (Airﬂow switch,

terminals 12 and 13, measures 24 VAC if open. On-off high

limit, terminals 25 and 26, measures 21 VDC if open.

t $IFDLJGUIFIFBUFSPWFSUFNQFSBUVSFUIFSNPTUBUIBT

tripped. Reset if necessary.

(54454PS-54VOJUT

t %JSUZIFBUFYDIBOHFS

t $MFBO

(54VOJUT

t %JSUZCVSOFST

t -PXHBTQSFTTVSF

t $MFBOPSBEKVTUBTBQQSPQSJBUF

Fill valve cycles on and off

frequently (several times per

minute)

t .BMGVODUJPOJOHMFWFMDPOUSPMTZTUFN t *GOFFEFEDMFBOQSPCFT

t $IFDLXBUFSDPOEVDUJWJUZ.JOJNVNDPOEVDUJWJUZGPS

proper operation of level control system is 100 μS/cm.

t 7FSJGZUIBUQSPCFXJSJOHJTDPSSFDU

t %SBJOWBMWFOPUGVMMZDMPTFE t *GBOPCTUSVDUJPOEPFTOPUBMMPXESBJOWBMWFUPGVMMZDMPTF

clean valve.

t *GUIFSFJTBCSPLFOPSXFBLSFUVSOTQSJOHPOESBJOWBMWF

replace the valve.

t $IFDLJG7"$JTQSFTFOUBUWBMWF*GTPDIFDLXJSJOHPG

Vapor-logic

control board terminals 3 and 4.

t1PPSUBOLHSPVOE t7FSJGZHPPENBDIJOFHSPVOE