Operating instructions

12
A. Filter
The GeoSource 2000 heat pump is equipped with a
disposable air filter. This filter should normally be
replaced once a month during normal usage. During
extreme usage or if system performance has decreased,
the filter should be replaced more often.
A dirty filter will reduce the airflow to the system. This
decrease in airflow will reduce the efficiency and comfort
level of the system. In the heating mode, reduced airflow
may increase the cost of operation and, in extreme cases,
cause system lockout due to high refrigerant pressures. In
the cooling mode, reduced airflow may reduce cooling
capacity and in extreme cases ice the aircoil over, causing
system shutdown due to low refrigerant pressures.
If another filter is used in place of the factory specified
filter, it should also be cleaned or replaced in a timely
manner. Be careful in selecting optional filters so that
excessive external resistance to airflow is not induced.
B. Lockout Lights
A lockout light on the thermostat will light to indicate
major system problems. If lockout occurs, follow the
procedure below:
1) Check for a clean filter and correct water supply from
the earth loop or well water system.
2) Reset the system by disconnecting power at the
circuit breaker for one minute, and then reapplying
power.
3) If shutdown reoccurs, check the indicator lights on
the controller in the unit and review the lockout
troubleshooting guide in section XII of this manual.
4) If lockouts persist, call your ECONAR dealer. Do
not continuously reset the lockout condition or
damage may occur.
C. Preseason Inspection
Before each season, the air coil, drain pan, and condensate
drain should be inspected and cleaned as follows:
- Turn off circuit breakers.
- Remove access panels.
- Clean air coil by vacuuming it with a soft-brush
attachment.
- Remove any foreign matter from the drain pan.
- Flush pan and drain tube with clear water.
- Replace access panels and return power to the unit.
XI. THERMOSTAT
OPERATION
This section covers basic operation of the standard 2-heat
1-cool thermostat that ECONAR carries. This thermostat
is ECONAR part number 70-2002, Honeywell part
number T8511G. If your thermostat is a different style,
please refer to the instructions supplied with that
thermostat.
The settings of the thermostat are controlled with the
“System”, “Fan”, “i”, up key, and down key buttons. The
System and Fan buttons are located behind the flip-down
panel.
By pressing the “System” button, you can control the
mode that the thermostat operates in. The five system
settings are:
1. Em. Heat – Controls backup heating. In this mode,
the heat pump’s compressor is locked out, and only
the backup heating elements (if installed) operate.
2. Heat – Controls normal heating operation.
3. Off – Both heating and cooling are off.
4. Cool – Controls normal cooling operation.
5. Auto – The thermostat automatically changes
between heating and cooling operation, depending
on the indoor temperature.
Note: When the thermostat is set to Auto, there must be
at least a 2
o
F difference between the Heating setpoint
temperature and the Cooling setpoint temperature.
The “Fan” button controls the operation of the heat
pump’s blower. The Fan button has two settings:
1. On – The blower operates continuously.
2. Auto – The blower operates with either a heating or
cooling call.
By pressing the “i”, or information, key, you can cycle
through your temperature setpoints. If you wish to
change a temperature setting, press either the up key or
down key when the appropriate mode is displayed. For
example, you wish to change the heating setpoint from
68
o
F to 70
o
F. Push the “i” key until the heating setpoint
appears on the LCD display. Then, press the up key until
the desired setpoint is reached. The thermostat will
automatically switch back to the room temperature
display after a few seconds.
If the LED on the bottom of the thermostat is lit, your
heat pump has locked itself out to protect itself. If this
occurs, please see the Compressor Lockout section of this
manual.
If you have additional questions about your thermostat,
please see the installation manual that was sent with the
thermostat.