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Blizzard Turbo Split System Manual
PROBLEM
Unit does not make warm air.
Unit does not cool or heat sufficiently.
O
P
PTIMIZING
ERFORMANCE
R
H
EDUCE
EAT
To improve the air conditioner's performance on a hot day, you can reduce the heat load by parking in a shaded area, covering
the windows with reflective shades to block out direct sunlight and pulling the curtain between the sleeper and cab. Make sure
windows and doors are tightly closed and turn off any other heat-producing appliances.
O
PERATION AND
Inspect and clean the air filter regularly to ensure good air flow across the evaporator coils. You will find the filter in the return
air path, either directly behind the grill or in front of the evaporator coil.
Do not block the air flow between the return air grill and evaporator coil with pillows, blankets, papers or other objects.
Check the condensate drain often to make sure water is draining properly. Make sure the drain fittings do not get clogged.
Note that the drain hose under the truck should be tied in a loop so as to form a natural trap. This will help prevent outside air
and exhaust discharge from getting inside.
Inspect and clean any debris from the condenser coil area of the external condensing unit to ensure good air flow.
Occasionally check for chafe on outside wires and refrigerant lines (split systems).
Dometic's Blizzard Turbo is designed so that you should never need to recharge the refrigerant loop under normal
circumstances. If the refrigerant level ever needs to be adjusted, federal law requires that it must be done by an EPA-licensed
HVAC technician with the proper tools to avoid accidental discharge of any refrigerant gas into the air.
Table 7: MAINTENANCE FOR COMPONENTS
COMPONENT
Compressor
Condenser Blower
Evaporator Blower
Heater
Evaporator Filter
Condenser Screen
Condenser Coil
Drain Tubing
L-3448 ENGLISH
1. Make sure switch is set to HEAT
2. Check the evaporator air filter, clean as needed
3. Make sure evaporator blower is running by checking for air flow from the
grill
4. Manually lower the fan speed, air temperature should warm up
1. Change the setpoint of the thermostat as required
2. Check evaporator air filter, clean as needed
3. Check condenser coil, clean as needed
4. Close curtains over windows and between the cab and sleeper
5. Call a service technician, do not attempt internal repairs yourself
L
OAD
M
AINTENANCE
No maintenance is necessary
No maintenance is necessary
No maintenance is necessary
No maintenance is necessary
Remove and wash with soapy water or blow out with compressed air monthly
Clean debris from screen every month during the cooling season
Clean with water and soap once yearly to remove any oil or debris
Check for obstructions and positioning before the cooling season
SOLUTIONS
NECESSARY ACTION
TROUBLESHOOTING
25
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Table of Contents
Troubleshooting
