59
Marvair GAA A/C w/Gas Heat I&O Manual
06/2023 Rev.5
Chapter 7 Maintenance
WARNING
ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could result in dangerous operation, serious injury, death or
property damage.
Improper servicing could result in dangerous operation, serious injury, death or property damage.
• Before servicing, disconnect all electrical power to the unit.
• When servicing controls, label all wires prior to disconnecting. Reconnect all wires correctly.
• Verify proper operation after servicing.
AVERTISSEMENT
DANGER D'ÉLECTROCUTION, DANGER D'INCENDIE OU D'EXPLOSION
Ne pas suivre les AVERTISSEMENTS de sécurité à la lettre peut entraîner un fonctionnement dangereux,
des blessures graves ou mortelles ou des dégâts matériels.
Une intervention inappropriée peut entraîner un fonctionnement dangereux, des blessures graves ou
mortelles ou des dégâts matériels.
• Avant d’intervenir, débranchez toute alimentation électrique vers l’unité.
• Quand vous intervenez sur des commandes, étiquetez les fils avant de les débrancher, afin de les
rebrancher tous correctement.
• Vérifiez le bon fonctionnement après une intervention.
7.1 Maintenance – Burner and Vent Outlet.
Marvair
strongly recommends that the unit be serviced a minimum of twice a year – once prior to the
heating season and once prior to the cooling season. At this time the filters, evaporator coil, condenser coil,
the cabinet, and condensate drains, the burner flame, the burner and the combustion air inlet and outlet
should be serviced and inspected as described below. Also at this time, the unit should be operated in the
cooling and heating cycles as described in Chapter 2, Start-Up. In addition to this seasonal check-out,
the unit should be maintained as follows:
7.2 Air Filter
Replace the air filter whenever it is visibly dirty. Note: Filters must be U.L.C approved or equivalent for
use in Canada.
7.3 Indoor Coil
If the coil becomes clogged or dirty, it may be cleaned by careful vacuuming or with a commercial
evaporator cleaning spray. DO NOT use a solvent containing bleach, acetone, or flammable substances.
Turn power OFF before cleaning. Be careful not to wet any of the electrical components. Be sure the
unit has dried before restarting.
7.4 Outdoor Coil
Periodically inspect the outdoor coil and the cabinet air reliefs for dirt or obstructions. Remove foreign
objects such as leaves, paper, etc.
If the coil is dirty, it may be washed off with a commercial solvent intended for this purpose. TURN OFF
POWER BEFORE CLEANING! Be sure that all electrical components are thoroughly dry before
restoring power.
7.5 Cabinet
The cabinet may be cleaned with a sponge and warm, soapy water or a mild detergent. Do not use bleach,
abrasive chemicals or harmful solvents.
