%3*45&&. 7BQPSMPHJD *OTUBMMBUJPO BOE 0QFSBUJPO .BOVBM t 1BHF
Operation
Table 85-1:
Troubleshooting guide (continued)
Gas-
to
-s
te
am
(
G
TS
) humidifi
er
issues
Issue
Possible causes
Actions
Alarm:
Blocked flue
t #MPDLFEGMVFTFOTPSJTPQFO
t $IFDLWFOUJOHTZTUFNGPSPCTUSVDUJPOT
t $IFDLBJSMJOFUPGMVFTXJUDIGPSPCTUSVDUJPOT
t 8JOEZDPOEJUJPOTDBVTFEPXOESBGUTJOWFOUJOHTZTUFN*OTUBMMB
high wind vent cap or isolate as recommended by local codes.
Alarm:
(BTWBMWF<OVNCFS>
fault
t 'BJMFEJHOJUJPONPEVMF
t .JTXJSFEHBTWBMWF
t $IFDLJHOJUJPONPEVMF3FQMBDFJGOFDFTTBSZ
t $IFDLHBTWBMWFXJSJOH
Alarm:
#VSOFS<OVNCFS>GBVMU
t /PHBTTVQQMZUPVOJU
t 7FSJGZUIBUHBTTFSWJDFWBMWFJTPOBOESFDFJWJOHNJOJNVN
pressure to manifold per rating plate.
t (BTWBMWFJTPGGPSUIFSFJTOPQPXFSUPUIFWBMWF
t $IFDLGPS7"$GSPNUIFJHOJUJPONPEVMFUPUIFHBTWBMWF
t $IFDLUIBUHBTWBMWFQMVHJTTFBUFEQSPQFSMZ
t #SPLFOJHOJUPS
t 7FSJGZUIBUJHOJUPSHMPXT3FQMBDFJGOFDFTTBSZ
t (BTWBMWFPVUMFUQSFTTVSFJTUPPMPX
t 7FSJGZPVUMFUQSFTTVSFJTTFUQFSSBUJOHQMBUF
t #MPXFSJOMFUJTEJSUZPSPCTUSVDUFE
t $MFBOJOMFUBOEDIFDLGPSPCTUSVDUJPOT
t 'MBNFTFOTPSOPUTFOTJOHGMBNF
t $IFDLGMBNFTFOTPSXJSJOH
t $IFDLQPMBSJUZBUJODPNJOHQPXFS4XJUDIJGOFDFTTBSZ
t 4USBZGJCFSGSPNCVSOFSUPVDIJOHGMBNFTFOTPS6TFBTDSFXESJWFS
to gently push down fibers near flame sensor.
t 'MBNFTFOTPSJTDSBDLFE3FQMBDF
t 1PMBSJUZSFWFSTFEBUQPXFSCMPDL
t $IFDLQPMBSJUZ
Alarm:
*HOJUJPONPEVMF<OVNCFS>GBVMU
t *HOJUJPOTFRVFODFFOHBHFEXJUIPVUQPXFSUP
gas valve
t 7FSJGZJHOJUJPOTFRVFODF
t 3FQMBDFJHOJUJPONPEVMF
t (BTWBMWFJHOJUFTFOTJOHFMFDUSPEFJTPVUPG
sequence
t 7FSJGZXJSFDPOOFDUJPOTUPUIFTFDPNQPOFOUT
Alarm:
#MPXFS<OVNCFS>GBVMU
t 5IFCMPXFSJTJODPSSFDUMZXJSFEPSUIFCMPXFS
failed to meet demand speed
t $IFDLGPSQSPQFSCMPXFSXJSJOH
t 3FQMBDFCMPXFS
Alarm:
No power vent airflow
t 5IFQPXFSWFOUFSBJSGMPXTXJUDIJTPQFO
t $IFDLGPSQSPQFSQPXFSWFOUXJSJOH
t 3FQBJSPSSFQMBDFQPXFSWFOUFS
Alarm:
No combustion airflow
t 5IFDPNCVTUJPOBJSEBNQFSJTPQFO
t $IFDLGPSQSPQFSDPNCVTUJPOBJSEBNQFSXJSJOH
t 3FQBJSPSSFQMBDFEBNQFSNPUPS
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