In Case Of Trouble - Carrier 48VR Owner's Information Manual

Performance 15.2+ seer2 2-stage packaged hybrid heat dual fuel system with puron (r-410a) refrigerant single and three phase

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Table Of Contents

Table of Contents

48VR: Owners' Information Manual

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) Check to be sure that your thermostat temperature selector is set

below the indoor temperature during the cooling season or above the

indoor temperature during heating season. Be sure the SYSTEM switch

or MODE control is in the COOL or HEAT position and not in the OFF

position.

(

) If your unit still fails to operate, call your servicing dealer for

troubleshooting and repairs. Specify the model and serial numbers of

your unit. (Record them in this manual in the space provided.) If the

Monthly maintenance items and outdoor unit rinsing may be performed by the consumer. All other maintenance items and all service work must be

performed by a qualified service technician. Read all Warning labels.

Consumer specific:

Inspect, clean, or replace air filter if filter is located indoors in return air grill.

Clear away debris and vegetation near unit.

Dealer specific:

Inspect cabinet and basepan for damage. Replace panels, gaskets, and other components that are damaged or severely

rusted. Make sure precipitation has not entered indoor section of unit.

Inspect electrical disconnect for proper function. Repair or replace as necessary.

Inspect electrical wiring and connections. Tighten loose connections. Inspect and perform functional test of equipment as

needed to ensure proper function. Repair or replace damaged or overheated components and wiring.

Inspect temperature and pressure safety controls for damage

Inspect and clean if necessary, burners and heat exchanger

Inspect and clean if necessary, combustion air openings and vent hood

Check gas piping and shutoff valve for leaks.

Check refrigerant system subcooling and/or superheat (system dependent).

Inspect inside of unit. Clean if debris is present.

Inspect condenser coil. Clean if dust, dirt, or debris is present. Rinse unit with fresh water (see Note 2).

Inspect condenser motor and fan for damage. Make sure fan spins freely.

Inspect and clean blower assembly (includes blower housing, wheel, and motor).

Inspect evaporator coil. Clean if dust, dirt, or debris is present (see Note 2).

Clean condensate pan and drain lines (more frequent maintenance may be required in humid climates - consult your local

HVAC dealer).

Inspect airflow system (ductwork). Check for leaks and repair as needed.

Notes:

1. The above list may not include all maintenance items. Inspection intervals may vary depending on climate and operating hours. Consult your HVAC dealer about a service

contract for seasonal inspections.

2. Do not use harsh chemicals or high pressure water on coils. More frequent rinsing is required for units near a sea coast.

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Table 2 – Maintenance Checklist

Description of Maintenance

Edition Date: 04/23

dealer knows exactly which unit you have, he may be able to offer

suggestions over the phone, or save valuable time through

knowledgeable preparation for the service call.