TROUBLESHOOTING GUIDE
PROBLEM |
| CHECK: | ACTION TO TAKE | FAULT | |
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| 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 | |
NO HEAT | 4. Outdoor unit for snow accumulation. (Heating) | Remove snow. | 5 | ||
OR | 5. | Indoor unit for dirty filter. (Heating) | Clean or Replace, see “Filter Care” section. | 2 | |
COOLING | |||||
6. | Emergency Heat Light Status on thermostat. |
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| E*FB - Light on = Malfunction | Check 1 thru 5, call qualified service man. | - | |
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| E*FH - Light flashing = Malfunction | Check 1 thru 5, call qualified service man. |
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| with Fault Code. | 3,4,7,8,9 | ||
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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.
CLEARANCES
The minimum clearances shown below must be maintained should any patio or yard improvements be done around the outdoor unit.
TOP 48" | SIDES 12" |
REAR 12" | FRONT * 24" |
* Service Access Panel
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
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
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.
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Unitary Products Group |
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P.O. Box 1592, York, Pennsylvania USA |
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Subject to change without notice. Printed in U.S.A. |
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Code: SBY | Supersedes: Nothing | |||
Copyright ã by York International Corporation 1995. All Rights Reserved. | ||||
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