Econar GeoSource 2000 Operations Instructions download pdf (Page 17)

the event of a compressor lockout the controller will send

a signal from L on the terminal strip to an LED on the

thermostat to indicate a lockout condition. This lockout

condition means that the unit has shut itself down to

protect itself, and will not come back on until power has

been disconnected (via the circuit breaker) to the heat

pump for one minute. Problems that could cause a

lockout situation include:

1. Water flow or temperature problems

2. Internal heat pump operation problems

3. Cold ambient air temperature conditions

If a lockout condition exists, the heat pump should not

be reset more than once; a service technician should be

called immediately.

,The cause of the lockout must be determined. Repeated

reset may cause damage to the system.

5. Compressor Anti-Short-Cycle

An anti-short-cycle is a delay period between the time a

compressor shuts down and when it is allowed to come on

again. This protects the compressor and avoids nuisance

lockout conditions. Anti-short-cycles occur after these

two conditions;

1. A 30 second to one minute time-out period occurs

on the compressor before it will start after its last

shutdown.

2. A 4 minute 35 second delay is incorporated into

the timing function immediately after power is

applied to the heat pump. This occurs only after

reapplying power to the unit. To avoid this

timeout while servicing the unit, apply power,

disconnect and reapply power very quickly. This

can sometimes eliminate the waiting period.

6. System Diagnostics

The controller is equipped with diagnostic LED lights

which indicate the system status at any particular time.

The lights indicate the following conditions:

1. 24 Volt system power GREEN

2. Fault or Lockout YELLOW

3. Anti-short-cycle mode RED

IX. STARTUP

Before applying power to the heat pump, check the

following items:

- Water supply plumbing to the heat pump is

completed and operating. Manually open the water

valve on well systems to check flow. Make sure all

valves are open and air has been purged from a loop

system. Never operate the system without correct

water supply.

- Low voltage wiring of the thermostat and any

additional control wiring is complete. Set

thermostat to the “OFF” position.

- All high voltage wiring is correct including fuses,

breakers, and wire sizes.

- The heat pump is located in a warm area (above

F). Starting the system with low ambient

temperature conditions is more difficult; do not

leave the area until the space is brought up to

operating temperatures.

- Hydronic side water temperatures are warm enough

(50

F or above) to start in the heating mode.

- The hydronic side water flow rate is correct (shown

in Table 1). Low water temperature starting may

require flow reduction until the system is up to

operating temperature.

You may now apply power to the unit. A 4 minute 35

second delay on power up is programmed into the heat

pump before the compressor will operate. During this

time the pump relay will energize the hydronic side-

circulating pump. Verify that the flow rate and

temperature of the hydronic side flow are at the

recommended levels.

The following steps will assure that your system is

heating and cooling properly. After the initial time-out

period is completed, the red indicator light on the

controller will shut off. The heat pump is now ready for

operation.

- Turn the thermostat up to its highest temperature

setting. Place the thermostat to the "HEAT"

position. The compressor should start 1 to 2

seconds later. If an electronic thermostat is used it

may cause its own compressor delay at this time, but

the compressor will come on after the time-out

period.

- After the unit has run for 5 minutes, check the

hydronic side return and supply water temperatures.

A water temperature rise of 10

F to 15

F is normal

in the heating mode, but variations in water

temperature and water flow rate can cause variations

outside the normal range.

- Turn the thermostat to the “OFF” position. The

compressor will shut down in 1 to 2 seconds.

- Next, turn the thermostat down to its lowest setting.

Place the thermostat in the "COOL" position. The

compressor will start after an anti-short-cycle period

of 2 to 3 minutes from its last shutdown. The anti-

short-cycle period is indicated by the red light on the

controller.

- After the unit has run for 5 minutes, check the

hydronic side return and supply water temperatures.

A water temperature drop of 10

F to 15

F is normal

in the cooling mode but factors mentioned in the

heating section can also effect temperature drop.

- Set the thermostat for normal operation.

- Instruct the owner on correct operation of the

thermostat and heat pump system. The unit is now

operational.

The heat pump is equipped with both high and low

pressure switches that shut the unit off if the refrigerant

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Comments to this Manuals

Scott jones 17 Apr 2024 | 22:42:08

I hate this never works

Econar GeoSource 2000 Operations Instructions Page 17

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