Install Instructions

32
SECTION IX
TROUBLESHOOTING 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
Temperature high
limit on thermostat
tripped
Determine reason for trip.
Depress red “RESET”
button on thermostat
Improper
thermostat setting
or calibration
Adjust tank thermostat to
appropriate setting.
See Section VII
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
Thermostat set too
high
Adjust thermostat setting.
See Section VII
Improper system
plumbing
Compare plumbing to
Section V
Water at faucet
too hot
Improper system
wiring
Compare wiring to
Section VI