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serVIce anD trOubleshOOtInG
serVIce hInts
1. Caution homeowner to maintain clean air filters at
all times. Also, not to needlessly close off supply
and return air registers. This reduces airflow
through the system which shortens equipment
service life as well as increasing operating costs.
2. Check all power fuses or circuit breakers to be sure
that they are the correct rating.
3. Periodic cleaning of the outdoor coil to permit full
and unrestricted airflow circulation is essential.
Pressure serVIce POrts
High and low pressure service ports are installed on
all units so that the system operating pressures can be
observed. Pressure tables can be found later in this
manual covering all models on cooling cycle. It is
imperative to match the correct pressure table to the
unit by model number.
r-410a
reFrIGerant charGe
This unit was charged at the factory with the quantity
of refrigerant listed on the serial plate. AHRI capacity
and efficiency ratings were determined by testing with
this refrigerant charge quantity.
The following pressure tables show nominal
pressures for the units. Since many installation
specific situations can affect the pressure readings,
this information should only be used by certified
technicians as a guide for evaluating proper system
performance. They shall not be used to adjust charge.
If charge is in doubt, reclaim, evacuate and recharge
the unit to the serial plate charge.
model
PA1324
PA1330
PA1336
PA1342
PA1348
PA1360
1 Motor will deliver consistent CFM through voltage supply range with no deterioration
(197-253V for all 230/208V models).
2 Continuous CFM is the total air being circulated during continuous (manual fan) mode.
3 Will occur automatically with a call for "Y" for cooling mode operation.
4 Will occur automatically with a call for "W1" for heating mode operation.
table 8
InDOOr blOWer PerFOrmance
rated
max
continuous
esP
esP
0.10
0.50
0.15
0.50
0.15
0.50
0.20
0.50
0.20
0.50
0.20
0.50
Fan blaDe settInGs
Shown in Figure 8 are the correct fan blade setting
dimensions for proper air delivery across the outdoor
coil.
Any service work requiring removal or adjustment
in the fan and/or motor area will require that the
dimensions below be checked and blade adjusted in or
out on the motor shaft accordingly.
FIGure 8
Fan blaDe settInG
3¼"
rated
Airflow
cooling cFm
600
800
750
1000
825
1100
925
1400
1025
1550
1150
1750
MD-1417BC
m
rated
heating cFm
800
1000
1100
1400
1550
1750
Manual
2100-467K
Page
19 of 24
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