Troubleshooting tips
Power failure
If you have a power failure, the unit's
Won't cool?
If your air conditioner operates, but won’t cool; check to see if the controls are properly set. Check the filter and clean thoroughly if needed. Check to see if the vent door is closed. Check to see if the chassis seal gasket is installed (refer to installation instructions).
Won't run?
Make sure the power cord is plugged in completely. Check for a bad fuse, tripped breaker or tripped LCDI Device. Refer to page 3 for LCDI reset instructions and to con¿rm proper fuse size.
For QuietMaster Programmable models only:
You can reset the circuit board by pressing the “Moneysaver” button and the “Check Filter” button at the same time. The LED (small red light) for the Check Filter will begin blinking. Once this occurs, turn the unit off by pressing the On/Off button once and then unplug the unit. Finally, plug the unit back in and turn it on by pressing the On/Off button once. All settings revert back to the factory default settings.
This is a warm weather appliance
Your air conditioner is designed to cool in warm weather when the outside temperature is above 60°F (16°C) and below 115°F (46°C), so it won't cool a room if it is already cool outside. If you want to cool a room in the spring or fall, touch Fan Only and set the Fresh Air/Exhaust control to Fresh Air. This will bring in a supply of cooler outside air.
Condensation is normal
Air conditioners actually pump the heat and humidity from your room to the outside air. Humidity becomes water, and your air conditioner will use most of the water to keep the outside coil cool. If there is excessive humidity, there may be excess water that will drip outside. This is normal operation.
Frosting
This usually occurs because of insufficient airflow across the coils, a dirty filter, cool damp weather, or all of these. Set unit to Fan Only and the frost will disappear. Setting the thermostat a little warmer will probably prevent the frosting from recurring.
Noises
All air conditioners make some noise. Friedrich QuietMaster® units are designed to operate as quietly as possible. An air conditioner mounted in a wall is quieter than one mounted in a window. It is important to ensure that the chassis seal gasket is properly installed (refer to installation instructions).
Cleaning your air conditioner
The decorative front and the cabinet can be cleaned with warm water and a mild liquid detergent. The indoor coil can be vacuumed with a dusting attachment if it appears to be dirty. The outdoor coil can be gently sprayed with a hose if you can get to it. If not, you might call your dealer for a more thorough cleaning when needed. The air ¿lter should be inspected weekly and cleaned if needed by vacuuming with a dust attachment or by cleaning in the sink using warm water and a mild dishwashing detergent. Dry the ¿lter thoroughly before reinstalling. Use caution– the coil surface can be sharp.
Heat pumps operate differently
If your unit is a "Y", or heat pump model, there are some things that you will want to be aware of.
Some functions of a heat pump differ from your unit when it is used for heating:
1.It is normal for ice to form on the outdoor coil of the heat pump. Moisture in the outside air, passing over the coil when very cold, will form ice.
2.If the outdoor temperature drops below 37°F (3°C), your heat pump will automatically turn on the electric resistance heat. When the temperature rises to 40°F (4°C), the compressor will resume the heat pump operation. If your unit is a 115 volt model (YS09), it is designed for use in warmer climates and has no electrical heat feature, and will not provide adequate heat below 37°F (3°C).
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.
Available Accessories
DC Drain Kit - Part No. 01900235
In some installations, excess condensate water caused by extremely humid conditions, may result in an undesirable water drip such as on a patio or over an entryway. MODEL
Window Installation Kits
TwinTemp or Heat/Cool room air conditioners are shipped without window mounting hardware because they are seldom mounted in the window. For those instances when these units are being mounted in a window, there are window installation kits available. Depending upon the chassis size for which an installation kit is desired, order:
WIKS for Small Chassis (ES, YS models)
WIKM for Medium Chassis (EM, YM models)
WIKL for Large Chassis (EL, YL models)
THESE ACCESSORIES CAN BE ORDERED FROM YOUR FRIEDRICH DEALER.
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