Installation / Operation Instruction Manual

31
SECTION IX
TROUBLESHOOTING GUIDE
PROBLEM
CAUSE
SOLUTION
No hot water
at faucet
Boiler does not
operate
Refer to boiler
installation instructions
Check main service
switch
Check fused disconnect
Circulator does
not operate
Check power supply
Replace as necessary
Improper
aquastat setting
or calibration
Turn tank aquastat to
appropriate setting
Zone valve does
not open (if used)
Check power supply
Replace as necessary
Electrical problem
(relay, wiring,
etc.)
Check fuse and replace
Check circuit breaker
and reset (if applicable)
Check power supply
Scale build-up
If boiler, circulator, and
tank are operating
satisfactorily, coil may
have scale coating. See
Section VIII:
Maintenance
Clogged cold
water filter or
boiler supply
strainer (if used)
Clean or replace filter
or strainer