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PROBLEM
No hot water at
faucet
Water at faucet
too hot
SECTION IX
TROUBLESHOOTING GUIDE
CAUSE
Boiler does not
operate
Circulator does not
operate
Temperature high
limit on thermostat
tripped
Improper thermostat
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)
Thermostat set too
high
Improper system
plumbing
Improper system
wiring
Refer to boiler installation
instructions
Check main service switch
Check fused disconnect
Check power supply
Replace as necessary
Determine reason for trip.
Depress red "RESET"
button on thermostat
Adjust tank thermostat to
appropriate setting.
See Section VII
Check power supply
Replace as necessary
Check fuse and replace
Check circuit breaker and
reset (if applicable)
Check power supply
If boiler, circulator, and tank
are operating satisfactorily,
coil may have scale coating.
See Section VIII:
Maintenance
Clean or replace filter or
strainer
Adjust thermostat setting.
See Section VII
Compare plumbing to
Section V
Compare wiring to Section
VI
32
SOLUTION
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