Blue Bird M380 2003, Owner'S Manual

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4-10 – Interior and Exterior Systems Operation – Heating Systems__________________________M380 Owner’s Manua
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4-10-10 Rev. “F”
4-10.5.22 Reduced Output
The heater may run without faulting, but at a reduced output. If this is noticed, it could be caused by
the following:
1. High altitude
2. Dirty nozzle
3. Defective regulator
4. Too small a nozzle
5. Poor water circulation
6. Ash deposit in combustion chamber
4-10.5.23 Smokey, Smelly Exhaust
The heater may run without faulting, but you may experience signs of soot, exhaust smoke and/or a
pungent smell. This is usually caused by the wrong fuel to air mixture. This can be affected by the
following:
1. Low voltage
2. High altitude
3. Dirty compressor air filter
4. Low compressor air output
5. Restricted combustion air flow (intake hose/exhaust hose/combustion chamber)
6. Low combustion fan output (defective motor/wrong rotation/dirty fan blade)
7. Partially clogged grooves in nozzle distributor.
4-10.5.24 Hot Water is Coming Out Cool
This may be a sign that the Mixing Valve is not set to the proper setting. Look through the 3/8” x 1”
Inspection Slot on the front of the Hurricane Heat case, if setting is not at 4, it will need to be
adjusted.
To adjust setting, remove cover from case and manually turn knob to highest setting (4), replace
cover.
NOTE: If there is no slot on the Hurricane case then this is not the cause of the cool water.
Unit may need to be serviced.
4-10.6 Maintenance
4-10.6.1 The First Few Weeks
About two weeks after your Hurricane heater has been running, you should conduct a general
inspection of the entire system.
Check for any leaks in the exhaust, fuel, or water systems. Tighten all clamps.
4-10.6.2 Adding Antifreeze
Once the system has been filled with water and purged of all air during the installation procedure, you
need to operate the heater at normal temperatures and then check for water leaks. If you do not find
any, add antifreeze to lubricate the pump and prevent the water system from corroding or freezing in
cold weather. To do this see
Section 4-10.6.11 Water Filling Procedures later in this manual.