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MCQUAY Service Guide Book Controller Configuration

5.0 CONTROLLER SETTING

5.1 Auto Random Restart

5.2 Hot Keep Selection

• Shorted at JH/JP1/J_LST jumper at main

board for auto restart (supplied).

• Remove the jumper to have non-auto restart.

D2.0

U1.5 / SQ2.0

L2.2 / L208A / LWS / W2 / J2*

* Available on J2 PCB version T4 and above

Three selections available:

a. Fan stop if indoor coil temperature < 30°C

(OFF).

b. Fan runs at low speed if indoor coil

temperature < 30°C and stop if indoor coil

temperature < 18°C (ON).

c. Cycle of low fan running for 30s and fan

off for 120s and repeat (INTERVAL).

WM – F/FR (U1.5 & L2EF)

3 selections available at the slide switch on the

On/Off Switch Board; Preset at OFF.

Other models (U1.5)

At CN3 location on the PCB,

i. Remove the connector to have (b) Fan

ON and

ii. Cut off the big resistor (12kOhm)

to have

Non-ducted Model – standard setting is (a) Fan

OFF

Ducted Model – standard setting is (c) Fan

INTERVAL

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McQuay MWSS Guida alla Risoluzione dei Problemi Pagina 27