Gas and Oil Home Heating Furnaces - A/C window unit developing ice
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MikeMAD.
06-17-02, 03:14 PM
my emerson a/c window unit is developing ice on the coils and fins . It is a 7500 btu unit. I vacumed and cleaned it. :confused:
lynn comstock
06-18-02, 07:33 AM
1)Run the unit and check the indoor coil for icing every 10 or 15 minutes until the freezing STARTS. Look at the freezing area of the coil. IS THE ENTIRE COIL FREEZING OR IS ONLY A PART OF THE COIL FREEZING?
2)IF the coil icing is TOTAL at the START, the airflow is low. Check the indoor coil with a light and a mirror to see if the fin spaces are clogged with dirt. If so the coil needs to be pressure washed with soap and water to drive the embedded dirt out of the coil.
3)IF the coil icing is PARTIAL at the START, the indoor coil is not getting enough refrigerant because:
.........A)Your system is low on refrigerant (most likely reason) or
.........B)Your metering device is not operating correctly.
4)The solution depends on the underlying cause (steps 2 or 3). You could handle the cleaning (step 2…full coil icing pattern) if you can take the unit outside and contain the cleaning water so as not to damage the equipment components. The solutions to step four (partial icing pattern) require an EPA certified technician.
2)IF the coil icing is TOTAL at the START, the airflow is low. Check the indoor coil with a light and a mirror to see if the fin spaces are clogged with dirt. If so the coil needs to be pressure washed with soap and water to drive the embedded dirt out of the coil.
3)IF the coil icing is PARTIAL at the START, the indoor coil is not getting enough refrigerant because:
.........A)Your system is low on refrigerant (most likely reason) or
.........B)Your metering device is not operating correctly.
4)The solution depends on the underlying cause (steps 2 or 3). You could handle the cleaning (step 2…full coil icing pattern) if you can take the unit outside and contain the cleaning water so as not to damage the equipment components. The solutions to step four (partial icing pattern) require an EPA certified technician.
MikeMAD.
06-20-02, 03:33 PM
Originally posted by lynn comstock
1)Run the unit and check the indoor coil for icing every 10 or 15 minutes until the freezing STARTS. Look at the freezing area of the coil. IS THE ENTIRE COIL FREEZING OR IS ONLY A PART OF THE COIL FREEZING?
2)IF the coil icing is TOTAL at the START, the airflow is low. Check the indoor coil with a light and a mirror to see if the fin spaces are clogged with dirt. If so the coil needs to be pressure washed with soap and water to drive the embedded dirt out of the coil.
3)IF the coil icing is PARTIAL at the START, the indoor coil is not getting enough refrigerant because:
.........A)Your system is low on refrigerant (most likely reason) or
.........B)Your metering device is not operating correctly.
4)The solution depends on the underlying cause (steps 2 or 3). You could handle the cleaning (step 2…full coil icing pattern) if you can take the unit outside and contain the cleaning water so as not to damage the equipment components. The solutions to step four (partial icing pattern) require an EPA certified technician.
1)Run the unit and check the indoor coil for icing every 10 or 15 minutes until the freezing STARTS. Look at the freezing area of the coil. IS THE ENTIRE COIL FREEZING OR IS ONLY A PART OF THE COIL FREEZING?
2)IF the coil icing is TOTAL at the START, the airflow is low. Check the indoor coil with a light and a mirror to see if the fin spaces are clogged with dirt. If so the coil needs to be pressure washed with soap and water to drive the embedded dirt out of the coil.
3)IF the coil icing is PARTIAL at the START, the indoor coil is not getting enough refrigerant because:
.........A)Your system is low on refrigerant (most likely reason) or
.........B)Your metering device is not operating correctly.
4)The solution depends on the underlying cause (steps 2 or 3). You could handle the cleaning (step 2…full coil icing pattern) if you can take the unit outside and contain the cleaning water so as not to damage the equipment components. The solutions to step four (partial icing pattern) require an EPA certified technician.
MikeMAD.
06-20-02, 03:35 PM
Lynn thank you for your response. Will talk to you soon.:cool: