76
Rev. 05/2020
PROBLEM
CAUSE
SOLUTION
REFERENCE
Losing HTF
Furnace is boiling
Add HTF. Complete
a full furnace check
of all systems
“Filling the Furnace
Initially with HTF”
Very slow leak
somewhere in the
system
Check and tighten
any leaking fittings
Local Dealer
Someone has
accidentally opened
a valve and not told
anyone
Check valves and
add HTF
“HTF Level
Maintenance”
Leaking water line
Fix leak in water line
Local Dealer
Bladder is leaking
Replace Bladder
“Bladder”
Door hoses are
leaking
Replace door hoses
“Firebox Door
Hoses and Elbows”
Hose clamps
are leaking
Tighten hose
clamps
Local Dealer
Smoke from
chimney is an
annoyance
Chimney is not
high enough
Add chimney
extension
“Chimney
Extension(s)”
Improper location
of furnace. Draft
blowers have just
turned off
Possibly relocate
furnace.
Local Dealer
Burning garbage
DO NOT BURN
GARBAGE
Local Dealer
Burning excessive
amounts of wood/
coal
Losing heat into
the ground. Poor
insulation
Re-insulate water
lines and maintain a
dry perimeter
Local Dealer
Ground water is
extracting heat from
the water lines
Provide a method
for ground water to
drain
Local Dealer