GVZC20 Service Manual

SERVICING

CTK04 ADDENDUM

BOOST MODE

BOOST MODE enables the system to operate at a higher

compressor speed than rated maximum compressor speed

and satisfy the structural load more e󰀨ectively during higher

ambient outdoor conditions. BOOST MODE is initiated by

an outdoor temperature sensor located in the outdoor unit.

Please note that outdoor equipment operational sound lev-

els may increase while the equipment is running in BOOST

MODE. Disabling BOOST MODE will provide the quietest

and most e󰀩cient operation.

NOTE: BOOST MODE is applicable only for *VZC20** or

later revision. BOOST MODE performance is most e󰀨ective

when paired with an electronic expansion valve enabled

indoor unit.

BOOST MODE is ON by default and is activated when the

outdoor temperature reaches 105°F. BOOST MODE can

be disabled and enabled and the activation temperature

adjusted in the BOOST TEMP menu using the following

procedure:

1. On the CTK04 HOME screen, select MENU.

2. From the MENU screen, select COMFORTNET™ USER

MENU.

HOME FAN

SYSTEM MENU

Tue, Apr 1,2014

1:00 pm

INDOOR

Humidity39 %

72°

OUTDOOR

STATUS

cool mode

69°

SET TO

76°

HOME FAN

SYSTEM

Security Sengs

Dealer Informaon

Installer Opons

ComfortNet User Menu