Filter
Top Products
CLEARANCES
The minimum clearances shown below
must be maintained should any patio or
yard improvements be done around the
outdoor unit.
POWER INTERRUPTION
When ice, snow, wind storms, etc. dis-
rupt electrical power supply to your
house, proceed as follows:
HEATING SEASON
1. Switch thermostat to Emergency
Heat. Note: There will be no heat avail-
able until power is reestablished.
2. Leave on Emergency Heat for at
least 8 hours after electrical power is
reestablished if the power was off more
than 8 hours.
3. Switch thermostat back to Heating or
Auto.
COOLING SEASON
1. Switch thermostat to Off position.
2. Do not switch to Cooling or Auto until
electrical power has been reestablished
for 8 hours if the power was off more
than 8 hours.
SERVICE CALLS
There are a few instances where you
can avoid unnecessary service calls.
(See Troubleshooting Guide above).
For E*FB systems use the guide but
disregard the Fault Code column. The
flashing light on the system thermostat
of E*FH units is capable of providing you
with time and money saving information.
The Fault code numbers listed can be
handled by taking the corrective action
indicated. Call qualified serviceman if
displaying fault code numbers not
listed.
PARTS INFORMATION
Replacement parts are available from
local YORK contractor/dealers or the
nearest YORK distribution center.
CHARACTERISTICS
OF HEAT PUMPS
A CONSTANT HEAT
Heat pumps have a noticeably cooler
supply air temperature than furnaces.
The common practice of over-sizing fur-
naces contributes to an “off-and-on-
again” operation with short blasts of hot
supply air. The heat pump system is
sized more closely to the heating needs
of your home. Heat is supplied at a lower
temperature over a longer period of time
to provide a more constant heat, and it
may give you the impression that your
system “never stops running".
WATER RUN-OFF
During the heating cycle, in mild weather
you may notice water running off the
outdoor coil. Moisture from the air is
condensed on the outside surface of the
coil where it gathers and runs off.
No need for alarm, your unit has not
sprung a leak!
OUTDOOR COIL
DEFROSTING
At certain outdoor conditions (low tem-
perature, high humidity), frost may build
up on the coil of the outdoor unit.
In order to maintain heating efficiency,
the system will automatically defrost it-
self.
Steam rising from the outdoor unit
is normal and is an indication of proper
operation.
The vapor cloud will only last
for a few minutes. When the defrost
cycle is completed, the system will auto-
matically switch back to heating. Electric
heat is automatically energized to main-
tain comfort during defrost.
TOP 48" SIDES 12"
REAR 12" FRONT * 24"
* Service Access Panel
Unitary Products Group
P.O. Box 1592, York, Pennsylvania USA 17405-1592
Subject to change without notice. Printed in U.S.A.
Copyright by York International Corporation 1995. All Rights Reserved.
Code: SBY
515.00-O1Y
Supersedes: Nothing
TROUBLESHOOTING GUIDE
PROBLEM CHECK: ACTION TO TAKE
FAULT
CODE
NO HEAT
OR
COOLING
1. Thermostat for proper setting. Set thermostat to proper setting. -
2. Circuit breakers and fuses. Reset circuit breakers - Replace blown fuses. -
3. Check Outdoor unit for dirty coil. (Cooling) Clean coil, see “Coil Care” section. 2
4. Outdoor unit for snow accumulation. (Heating) Remove snow. 5
5. Indoor unit for dirty filter. (Heating) Clean or Replace, see “Filter Care” section. 2
6. Emergency Heat Light Status on thermostat.
E*FB - Light on = Malfunction Check 1 thru 5, call qualified service man. -
E*FH - Light flashing = Malfunction
Check 1 thru 5, call qualified service man.
with Fault Code. 3,4,7,8,9
After completing the checks and actions above, turn thermostat to “OFF” for 10 seconds and
attempt restart. Wait 5 minutes. If system does not start, call qualified serviceman.
On E*FH models, obtain the fault code number of times the Emergency Heat light on the
thermostat flashes between pauses.