Installation / Operation Instruction Manual

28
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.
Clogged cold water
filter or boiler supply
strainer (if used)
Clean or replace filter or
strainer.
Water at faucet
too hot
Improper system
plumbing
Compare plumbing to
Section V.
Improper system
wiring
Compare wiring to Section
VI.
Aquastat set too high
Lower aquastat setting. See
Section VII.