Econar GeoSource 2000 GW Series Installation And Operating Instructions Manual page 22

Remote Hydronic Control or
Room Thermostat
Compressor Overload
Defective
compressor overload, check
and
replace
if
necessary.
If tle
compressor
runs too hot,
it
may be due
to
a
insufficient refrigerant
charge.
Aquastat The differential is
set
to close on Aquastat. Increase differential
settin-s
to
1-5"F
Unit
short cycles
Wiring
and
Controls Loose
wiring
connections. or control contactor defective.
Thermostat
Improperly
Set Is
it
below
room temperature? Check
the
thermostat setting.
Defective Thermostat Check thermostat operation. Replace
if
found defective.
Incorrect
Wiring
Check for broken. ioose. or incorrect wires.
Unit will
not
operate in
"heating"
Aquastat set
Too High Heat pump is trying
to heat
hot water to too hot of
a
temperature
(over
120"F).
Reduce Aquastat setpoint.
Remote Hydronic Control or
Room Thermostat
Ensure that
these
products
are
properly configured
according to their own
instructions for
the
"System
Type"
thev
are
installed on.
Reversing
Valve
does
not Shift Defective solenoid valve
will
not energize. Replace solenoid coil.
Reversing
Valve
does
not Shift,
the
Valve is Stuck
The solenoid valve is de-energized
due to
miswiring
at the
unit or
thermostat-
correct wiring. Replace
if
valve is tight or frozen and
will
not move. Switch from
heating to cooling
a
few times to loosen valve.
Aquastat
set
Too
Low Heat pump is
trying to cool water too low. Increase Aquastat setpoint.
Unit
does
no1
cool
(Heats Only)
Insuffi cient Antifreeze Water is freezing in hydronic coil. Check antifreeze level
and add antifreeze
to
obtain correct
freeze
protection.
Compressor
Make
sure
the compressor is not in direct contact with
the base
or
sides
of
the
cabinet. Cold surroundings
can cause
liquid
slugging, increase ambient
temperature.
Contactor
A
"clattering" or "humming"
noise
in
the contactor could
be due
to control voltage
less
than
1
8
volts.
Check
for low supply voltage, low
transformer output or extra
Iong runs ofthermostat wires.
Ifthe
contactor contacts
are
pitted
or corroded
or
coil is defective, repair or replace.
Rattles
and
Vibrations Check for loose screws, panels, or intemal components. Tighten
and secure.
Copper
piping could
be
hitting
the
metal surfaces. Carefully readjust by bending
sli.ghtly. Check that hard
plumbing
is isolated from
building
structures.
Water
and
Airborne Noises
Noisy Operation
Cavitating
Pumps Purge air
from ground
loop or
hydronic loop
system.
Improperly
located thermostat (e.g.
near
kitchen,
sensing
inaccurately the comfort
Shouid be
I .0
or
1.2,
)
level ln
Check
Excessive water through the water-cooled heat
cause
a
sound. Check the water
flow
ensuring
adequate
flow
for good operation but
the noise.
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