McQuay MWMV Spécifications télécharger pdf (Page 90)

(B) Cold Blast (Cooling cycle)

During cold start, the set temperature of controller is decreased by 2°C to stabilize the room temperature

quickly.

During heating operation, if the room temperature and outdoor temperature are high, or when the indoor

air filter is choked, the condensing pressure will increase rapidly. To prevent the burn out of compressor,

the M. C. controller will stop the operation of the air conditioner under this condition.

• For manual reset type, the ON / OFF button must be pressed to reset the system.

(D) Overload Protection In Cooling Operation

When outdoor and indoor air temperature raise beyond the operation limit, or when the outdoor coil

choked with dirt, the M.C. controller detects abnormal increase in condensing temperature. It will stop the

operation to prevent compressor burn out.

(E) Frost Prevention And Filter Check

In order to prevent the freezing of indoor coil, the controller will operate as follow.

(F) Auto Random Restart

When power resumed, the unit will automatically restart and operate at the previous setting as before

power failure occurred. (Remove jumper at JP1 will cancel the auto random restart function. Please refer

to wiring diagram for the location of the JP1).

COMP.,

OUTDOOR FAN &

4-WAY VALVE

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McQuay MWMV Spécifications Page 90