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SECTION IX
TROUBLE SHOOTING GUIDE
PROBLEM
CAUSE SOLUTION
Refer to boiler installation
instructions
Check main service switch
Boiler does not
operate
Check fused disconnect
Check power supply Circulator does not
operate
Replace as necessary
Improper aquastat
setting or calibration
Turn tank aquastat to
appropriate setting
Check power supply Zone valve does not
open (if used)
Replace as necessary
Check fuse and replace
Check circuit breaker and
reset (if applicable)
Electrical problem
(relay, wiring, etc.)
Check power supply
Scale build-up If boiler, circulator, and tank
are operating satisfactorily,
coil may have scale coating.
See Section VIII:
Maintenance
No hot water at
faucet
Clogged cold water
filter or boiler
supply strainer (if
used)
Clean or replace filter or
strainer
Aquastat set too
high
Lower aquastat setting. See
Section VII
Improper system
plumbing
Compare plumbing to
Section V: Water
Connections
Water at faucet
too hot
Improper system
wiring
Compare wiring to Section
VI: Electrical Connections
INTERNET VERSION FOR REFERENCE ONLY