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Summary of Contents for Carrier HEAT PUMP
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Page 1: Heat Pump
HEAT PUMP A GUIDE TO OPERATING AND MAINTAINING YOUR RESIDENTIAL HEAT PUMP UNIT NOTE TO INSTALLER: THIS MANUAL SHOULD BE LEFT WITH THE EQUIPMENT USER. -
Page 2: Important Facts
Your new heat pump represents both the latest in engineering The type of heat pump you have purchased is a split system. development and the culmination of many years of experience The split-system type has an indoor and an outdoor unit, each from one of the most reputable manufacturers of comfort of which contains a coil. -
Page 3: Operating Your Heat Pump
This air may feel cool because it is slightly less than your skin temperature. However, it is sufficiently warm to The operation of your heat pump system is controlled by the keep you comfortable. indoor thermostat. You simply adjust the thermostat and it •... -
Page 4: Heating Mode
With the SYSTEM or MODE control of your indoor thermo- Typically, the SYSTEM or MODE control on your thermostat stat set to HEAT, your heat pump will run in heating mode until offers the following selections: COOL, OFF, HEAT, AUTO, room temperature is raised to the level you have selected. -
Page 5: Performing Routine Maintenance
There are no filters in the outdoor unit of a split system. If your Also, if the electricity to your heat pump has been off for more indoor unit is a gas or oil furnace, refer to your furnace User’s than 30 minutes, switch your thermostat to EHEAT mode Manual for filter location and procedures for replacement or... -
Page 6: Regular Dealer Maintenance
Be sure registers are open and unobstructed. • Operational check of the heat pump system to determine • Check the settings on your indoor thermostat. If you desire actual working condition. Necessary repair and/or adjustment cooling, make sure that the temperature control selector is set should be performed at this time. -
Page 8: Installation Data
Have available the Model No., Series Letter, & Serial No. of your equipment to ensure correct replacement part. Carrier Corporation Indianapolis, Indiana 46231 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations . Copyright 1997 Carrier Corporation Form: OM38-40 Replaces: OM38-31, -32 Printed in the U.S.A.
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Questions and answers
Why is there ice on my coils of my heat pump?
Ice can form on the coils of your Carrier heat pump due to several factors:
1. High Humidity and Temperature Swings: In cold, humid conditions, moisture can accumulate on the coils. If temperatures drop quickly, the moisture can freeze before it drains properly.
2. Defrost Cycle Limitations: While the heat pump defrosts normally, the ice buildup on the bottom third of the coil suggests that the defrost cycle may not be fully clearing all the ice.
3. Low Refrigerant Levels: A refrigerant leak can cause the system to freeze up, as low refrigerant affects the heat exchange process.
4. Snow or Blocked Drainage: If the unit is partially covered or the drainage is blocked after a snowstorm, ice can accumulate on the coils.
A possible solution is installing a pan heater to help prevent ice buildup. If ice formation persists, checking the refrigerant levels and ensuring proper drainage may help.
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How can I turn on my defrost mode?
To turn on the defrost mode on your Carrier heat pump, you can manually trigger it by jumping the two defrost test pins on the control board. Use a jumper wire or a screwdriver to connect these pins, which will speed up the defrost cycle initiation. Normally, the system checks conditions every 60 minutes, but this method forces it to enter defrost mode immediately. The defrost cycle typically lasts about 10 minutes or until the defrost thermostat closes. Once the defrost cycle ends, the system will return to heating mode.
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Where is the defrost mode setting on my thermostat?
The defrost mode on a Carrier heat pump thermostat is not manually set by the user. It operates automatically when the system detects the need for defrosting. The thermostat controls heating and cooling modes, and the system will enter defrost mode as needed. If the system is set to HEAT or AUTO, the heat pump will function normally, and defrost mode will activate when required.
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What is the recommended setting for the heat pump turn on point.
The recommended turn-on setting for the Carrier heat pump (25HCE4 with FB4C air handler) is at or above 15°F.
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What are the recommended settings for auxiliary heat for a carrier GH5SAN53600AABAa heat pump system?