Ix- Troubleshooting Guide - Bradford White SW-2-40R-L Installation And Operating Manual

PROBLEM
No hot water
at faucet
SECTION IX
TROUBLESHOOTING GUIDE
CAUSE
Boiler does not
operate
Circulator does
not operate
Improper
aquastat setting
or calibration
Zone valve does
not open (if
used)
Electrical
problem (relay,
wiring, etc.)
Scale build-up
Clogged cold
water filter or
boiler supply
strainer (if used)
Refer to boiler
installation instructions.
Check main service
Check fused
Check power supply.
Replace as necessary.
Turn tank aquastat to
appropriate setting.
Check power supply.
Replace as necessary.
Check fuse and
Check circuit breaker
Check power supply.
If boiler, circulator, and
tank are operating
satisfactorily, coil may
have scale coating. See
Section VIII:
Maintenance.
Clean or replace filter
29
SOLUTION
switch.
disconnect.
replace.
and reset (if
applicable).
or strainer.