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Functional Control for a Standalone Unit ESIE05-07

2–42 Part 2 – Functional Description

Reset procedures

for "EEV NOT

CLOSED" alarm

(Refer also to installation manual).

EEV NOT CLOSED ALARM

Because an "EEV NOT CLOSED" alarm can have a dangerous situation for the unit there is a special

procedure to reset this alarm.

1 The service person must check if there is no problem to start the unit (no liquid into the

compressor? …).

2 The service person can consult the reason for the EEV NOT CLOSED alarm in the service menu

Ex.

EEV DRIVER C1(03)

SYSTEM WAITING FOR:

VALVE OPEN

GO AHEAD: NO

3 After this the service person can give a "go ahead" by changing the "NO" into "YES" and confirm

(= push ENTER).

After this action the EEV NOT CLOSED alarm can be reset in the ALARM MENU.

Remarks 1 EEV errors are delayed, with a timer, after power ON of unit.(Can be set in service menu: default

90sec).

This is to avoid that an autorestart is prevented by an alarm that happens to fast at the power on

of the unit.

2 pLAN= Internal network between pCO

controller / User terminals and EEV drivers. (Connections:

tx+/tx-/GND).

3 Change of address is only noticed after power off/on by software (for pCO

controller & EEV

driver).

4 It is possible to read present pLAN address by using external user terminal (confirm first address

setting).

push up/down & enter simultaneous for 10 sec (or 5 sec 2 times after each-other)

(or first 3 menu buttons).

(pCO

controller or EEV-driver = square, User terminal = smaller square).

5 EEV additional info screens are activated in service menu when an EEV is present.

Additional info:

READOUT MENU: Superheat, suction temp.

SETPOINT MENU: Superheat setpoint, pressure setpoint

ESIE05-07.book Page 42 Wednesday, October 11, 2006 10:42 AM