10
IMPORTANT
Do not operate your Heat Pump for extended
periods of time without the filter installed.
An even more serious condition occurs when the
Heat Pump is operated without a filter. When this
happens the lint, grease, etc. that are normally
stopped by the filter are now accumulating in the
cooling coil. This not only leads to a loss of air
volume and a possible icing- up of the cooling coil
but could also result in serious damage to the
operating components of the Heat Pump.
We recommend that the filters be cleaned and
changed at least every two weeks when the Heat
Pump is in operation.
Cleaning and/or changing the filters:
1. Remove the two grilles from the ceiling assembly
by pulling the tabs on the grilles.
2. Remove and clean or replace the two filters.
3. Re-install the filters and grilles in the ceiling
assembly as shown in Figure 2.
4. If the vehicle is equipped with a flush mount ceiling
assembly, remove the four return air grille screws.
Remove filter from the grille and either clean or
exchange with new filters.
NOTE: Should replacement filters be needed, please
contact an Airxcel, Inc. Authorized Service Center
or Airxcel, Inc. direct for replacements. The filters
used in our products are factory recommended for
the best performance.
Our warranty will not support any filters such as
HEPA filters or any other material not
specifically recommended by Airxcel, Inc.
II. Service Person
A. Electrical – All electrical work and/or inspection
should be performed only by qualified service
personnel. Contact your nearest Airxcel, Inc.
Service Center if electrical problems should arise.
B. Check Points – Failure to start or to cool the air
are sometimes problems with Heat Pump units.
The Coleman-Mach RV Heat Pump is designed to
operate on 115 volt electrical power. If the
compressor on the Heat Pump fails to start, check
with your Airxcel, Inc. Service Center to determine
that the proper wire size is connected to the unit,
the proper circuit breakers are installed as
protection devices on the electrical circuit and the
proper sized extension cord is being used for the
distance covered from the utility outlet to the RV.
The required minimum wire size is #12 AWG for
lengths up to 25 feet (larger wire size for greater
distances). Each air conditioning unit must be
protected with a 20 amp time delay fuse or circuit
breaker.
If the Heat Pump continues to trip off the circuit
breakers, have an electrician check the starting
amperage and running amperage on the unit. If
the circuit breaker continues to trip off and the
electrical consumption is found to be normal, it will
require the replacement of the faulty circuit
breaker.
If all electrical power to the Heat Pump is normal
but neither the fan nor the compressor will
operate, the connector plug located behind the
ceiling assembly control box should be checked to
determine whether it is faulty.
On the heating-cooling Heat Pump models, if all
electrical power to the unit is normal and the fan
runs but you never get any heated air, then the
electrical plug to the heating unit should be
checked for a secure connection. If this does not
correct the malfunction, the heating thermostat or
limit switch may be faulty.
C. Mechanical Integrity – The Heat Pump should be
inspected periodically to be sure that the bolts
which secure the unit to the roof are tight and in
good shape. Also, an examination of the plastic
shroud covering the Heat Pump on the top of the
roof should be made periodically. Be sure the
four mounting screws and washers are snug and
holding the shroud to the Heat Pump. Also
examine the shroud to be sure it is not developing
cracks or has suffered damage from impact.
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