York 66441-YUM-D-1011 User Manual
Subject to change without notice. Printed in U.S.A.
66441-YUM-D-1011
Copyright © 2011 by Johnson Controls, Inc. All rights reserved.
Supersedes: 66441-YUM-C-0711
Johnson Controls Unitary Products
5005 York Drive
Norman, OK 73069
CONDENSER COIL
An annual check and cleaning, if necessary, of the outdoor
coil should be done. Cleaning should be as often as neces-
sary to keep the coil clean. Clean any debris and dirt from the
outside coil face with a brush being careful not to damage the
fins. If extremely dirty, a hose can be used to wash the coil
from the inside out while brushing a soapy solution on the
outside.
coil should be done. Cleaning should be as often as neces-
sary to keep the coil clean. Clean any debris and dirt from the
outside coil face with a brush being careful not to damage the
fins. If extremely dirty, a hose can be used to wash the coil
from the inside out while brushing a soapy solution on the
outside.
REGISTERS
Supply and return air registers must be open when the unit is
in operation. Obstructions must not be allowed to block air-
flow in or out of the registers.
in operation. Obstructions must not be allowed to block air-
flow in or out of the registers.
TROUBLESHOOTING
BEFORE CALLING A SERVICE PERSON:
A.
Check thermostat setting and insure thermostat is calling
for heat or cooling.
for heat or cooling.
B.
Check thermostat for lint, etc.
C.
Check fuses or circuit breakers.
D.
Check filters for excessive dust accumulation.