77
Rev. 05/2020
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