Napoleon Condo Pack, Installation And Operating Instructions Manual

Page: 53 / 128

53
IOM
W415-2288 / 08.29.2019
HEATER MODULE TROUBLESHOOTING GUIDE
WARNING!
THIS TROUBLESHOOTING GUIDE IS INTENDED FOR USE BY
QUALIFIED SERVICE PERSONNEL ONLY!
FAULT CONDITION POSSIBLE CAUSE CORRECTION
Unit will not operate.
Power disconnected or Loose
wiring connections
Connect power and/or turn the power disconnect
switch ON. Make sure all the wiring connections are
secure and tight.
Blown Fuse/Breaker tripper Replace fuses/reset breaker.
Blower is running, but unit is not
producing heat.
Loose wiring connections Secure the connections.
Heating element breaker (s)
tripped
Reset Breakers.
Rectifier board/relay is not
receiving required voltage
Check main power line voltage. If within 197V-253V,
check if transformer is working, if not - replace. Check
if supplemental fuse on secondary side of transformer
is blown - replace if necessary.
Rectifier board and/or relay is not
working
Check voltage/amperage across each component and
replace accordingly.
Unit is operating, but air
temperature rise is MORE than
normal range (35F-65F).
Blower speed tap is connected to
lower speed than factory setting
for provided heating element
Connect to the factory recommended speed taps, refer
to the manual.
Dirty air filter Replace air filter or wash if it is washable.
Too much external static pressure
Check if supply and/or return duct opening is
restricted, take necessary action to keep them fully
open and/or revise the duct work design.
Unit is operating, but air
temperature rise is LESS than the
normal range (35F-65F).
Blower speed tap is connected to
higher speed than factory setting
for provided heating element.
Connect to the factory recommended speed taps,
refer to the manual.
One or more of the Thermal fuses(
white ceramic part on heater
panel) have blown which will keep
the heating element (s) OFF
With Power
OFF
to the unit, check the continuity
across the thermal fuse: if defective, replace it.
Also check the air filter: if severely clogged, take
necessary action. Clogged filter, restricted
return/supply duct will result in low air flow, which
then, result in cycling of auto-reset switch and/or
opening of the thermal fuse.
Unit is operating, but air
temperature is fluctuating high
and low.
Dirty air filter, restricted supply
and/or return duct
Replace air filter or wash if it is washable; remove
restriction from supply and return duct opening.
Blower is not operating.
Loose wiring connections.
Check all the wiring connections and make sure they
are tight.
5A fuse has blown Check and replace it with Class CC time delay 5A fuse.
8.3 HEATING MODULE TROUBLESHOOTING
TABLE 10.
Procedure:
1. Operate the unit at standard AHRI conditions as close as possible (80°F DB / 67°F WB Indoor, 95°F DB Outdoor).
2. Connect charging hose from liquid port on the refrigerant bottle to charging service port.
3.
Open refrigerant bottle and purge hose at bottle fitting.
4. Temporarily install a temperature measuring device on the liquid line near the TXV and one at the suction line
near the compressor. Ensure that the temperature measuring device makes adequate contact and insulated for
accurate readings.
5. Operate the system for at least 10 minutes.
6. Check sub-cooling and superheat. Systems using thermostatic expansion valves should have a sub-cooling
as per table below: