Econar GeoSurce Vara 2 Plus GV Series Lnstallation And Operating Lnstructions page 18

Reversing
Valve does
not Shift
Reversing
Valve
does
not
Shift, the
Valve is Stuck
Unit
does
not cool
(Heats Only)
Water
of
water
Lack of sufficient
or
Recalculate
heat gains or losses
for
space
to be
conditioned.
If
excessive,
rectify by
adding
insulation, shading, etc
Unit Undersized
Check
for
leaks
in ductwork or introduction of
ambient
air doors/windows throush
Air
Leaks
in Ductwork
thermostat
(e.g. near
kitchen, not
sensing the
cornfort leve1
in
living
areas). Check anticipator setting.
Improperly located
Thermostat
Lack of
adequate
air{low or improper
,
duct
sizing.
Check the
filter,
it
should
distribution of
air.
Check the motor speed and
be
inspected every month and cleaned
if dilfy.
Remove or add resisttmce
Airflow
Low
on
refrigerant charge
causing
inefficient operation. Adjust only after checking
CFM and GPM.
Refrigerant Charge
valve creating bypass
of refrigerant
from
discharge
to suction
side
of compressor.
When
it
is necessary
to replace the
reversing valve, wrap
it
with
a
wet
cloth
and
direct
the heat
away. Excessive
heat can
Defective reversing
the
valve.
Reversing
Valve
Insufficient
cooling or
heating
Level
vertical units.
Unit not Level
Clean condensate
drain. Make
sure
external
condensate
drain is
installed
with
adequate
drop
and
pitch.
Water drips
from unit
Condensate
Drain Line Kinked
or Plugged
Make
sure the
compressor is
not in direct contact
with
the base
or
sides
of the cabinet.
creates
noise
or
Compressor
Blower wheel
hitting
the
casing, adjust
for
clearance and
alignment.
Bent
blower, check
and
check
and
if
Loose
blower wheel on
Blower
and
Blower Motor
Contactors
Check
for loose screws, panels,
or internal components. Copper
piping
could be
hitting
the
metal surfaces.
Rattles and
Vibrations
Undersized
ductwork
will
cause
high
airflow velocities
and
noisy
operation. Excessive
water through the water
coil
will
cause a
squealing
sound. Check
the
water
flow,
ensuring adequate
flow for good operation but
eliminating
the noise.
Water
and
Airborne
Noises
Purge air
from closed
loop
system.
Cavitating Pumps
Noisy
Operation
Defective solenoid valve
will
not solenoid
coil.
The solenoid valve is de-energized
due
to
miswiring
at the
unit or thermostat-colrect
wiring.
Replace
if
valve is
tight or frozen and
will
not
move.
Switch from heating to
a
few times to loosen valve.
A "clattering" or "humming"
noise
in
the
contactor could be due to
control voltage
less
than
18
volts.
Check
for low supply voltage,
low transformer output, or fransformer tap
setting.
If
the
contactor contacts
are
pitted or corroded or coil
is defective, repair or
t6
CHECKS AND CORRECTIONS
POSSIBI.E
CAUSB PROBLEM
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ohten