Bradford White Defender Safety System 238-48248-00, Дополнение к инструкции по эксплуатации

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13
TROUBLESHOOTING
(In addition to instruction manual.)
LED Status Control Status Probable Cause
None (LED not on
or flashing)
Elect rical pow er not
present
1. Cont rol pow er sw it ch in " OFF" posit ion
2. Supply volt age int errupted
One short f lash
every f our
seconds
St and-by mode,
Thermost at is sat isf ied (no
f aults)
Temperat ure demand is sat isf ied (no call f or
heat )
Alt ernat es bright
and dim
(heart beat )
Thermost at calling f or heat
(no f ault )
Tank t emperat ure below set point of
t hermost at
Short f lash once
every second
Weak pilot signal on last
call f or heat
1. Unst able pilot
2. Pilot t ube block or rest rict ed
3. Oxidat ion build-up on pilot elect rode
4. Wire damage t o pilot assembly or bad
connect ion at gas valve
Tw o f lashes,
t hree second
pause
Relay not w orking Fault y relay
Three f lashes,
t hree second
pause
Relay not w orking Fault y relay
Four f lashes,
t hree second
pause
Excessive t ank
temperat ure, syst em must
be reset
1. Thermal w ell sensor out of calibrat ion
2. Fault y gas valve
Five f lashes,
t hree second
pause
False pilot f lame present Pilot valve stuck in open posit ion
Six f lashes, one
f lash, t hree
second pause
(Sof t Lockout )
Failed t o light pilot ,
syst em reset s af t er (5)
minut es
1. Unst able pilot
2. Pilot t ube block or rest rict ed
3. Oxidat ion build-up on pilot elect rode
4. Wire damage t o pilot assembly or bad
connect ion at gas valve