74
Rev. 05/2020
75
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 what
seems like a
lot of 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
PROBLEM
CAUSE
SOLUTION
REFERENCE
Top flue is clogged
Clean top flue
“Top Rectangular
Flue”
Using more heat in
building than you
realize
Verify furnace
size for complete
applications
Local Dealer
Can’t get
building(s)
warm enough
Insufficient heating
devices in building
Call your Local
Dealer
Local Dealer
Improperly installed
heating devices in
building
Correct installation
of heating devices
Local Dealer
Heating devices
need maintenance
Maintain heating
devices
Local Dealer
HEATMOR™ not
running between
160°F - 180°F
Adjust Aquastat
“Electrical Aquastat
Controller”
Insufficient HTF
circulation from
HEATMOR™
A) Check circulating
pumps, replace if
needed
B) Kinked line
Local Dealer
C) Air in system
D) Pump is to small
or has a restriction
E) Lines are to small
Local Dealer
One appliance getting
more than it’s share
of the flow of HTF
Adjust the flow of
HTF to the different
heating appliances
Local Dealer
Defective
thermostat and
controls in building
Replace thermostat
and controls
Local Dealer
Faulty electrical
supply
Check electrical
connections and
check
Electrician
Indoor forced air fan
is plugged, reducing
air flow through coil
Call your Local
Dealer
Local Dealer