Ice build up on the pipes from the evaporator unit could be caused by a faulty evaporator fan, a blockage in the evaporator unit or worst case a lack of refrigerant due to a leak somewhere.
Is the evaporator fan working or not, you didn't say?
If not, here's the [document|32619|tech sheet] for the model.
Enter the diagnostic test mode as described by the sheet and run Service test #3 to see if the evaporator fan motor circuit is OK or not.
If the fan is OK then depending on your location, you may need a licensed refrigerator repairer to check the sealed system due to the environmental regulations regarding the handling of refrigerant gases.
If there is a problem with the sealed system then according to the [link|https://www.searspartsdirect.com/manual/4gnkvyrmjc-000593/kitchenaid-kfiv29pcms02-bottom-mount-refrigerator-parts|warranty] in the user manual (see p.40, there may be an up to 10 year warranty on the sealed system. Just something to consider if it is still within the warranty period
=== Update (02/05/24) ===
@justinchastain
What are the actual temps in the refrigerator and freezer compartments?
Is the compressor running constantly trying to drive down the temp in the freezer compartment?
If the compressor is not running continually, but stops occasionally for some minutes, before starting again, then the control thinks that the temps are OK.
Perform ''Test #1 FC thermister test'' to make sure that the freezer temperature thermistor is OK
If the temp in the refrigerator compartment is in the range 33°F → 41° then this is in the acceptable range for the refrigerator compartment but if the temp in the freezer compartment is not between -5°F → 5°F then the compressor should be running continually trying to get the freezer temp down to that level.
There are two evaporator units in the model i.e. one in the refrigerator compartment and one in the freezer compartment. The control board will operate the 3 way valve in the sealed system (part # W11580434) so that the refrigerant will not go to the refrigerator evap unit as the refrigerator is cold enough but will go to the freezer evap unit to get it to the correct temp.
-
If the FC thermister tests OK and the compressor is running continually it may be a problem with the 3 way valve. Same problem as testing for a leak or lack of refrigerant, as it is also in the sealed system unless it is an electrical problem in controlling the valve.
+
If the FC thermister tests OK and the compressor is running continually it may be a problem with the 3 way valve or a blockage in the system. Checking the 3 way valve is the same as for a lack of refrigerant or a blockage, as it is also in the sealed system unless it is an electrical problem in controlling the valve.
Ice build up on the pipes from the evaporator unit could be caused by a faulty evaporator fan, a blockage in the evaporator unit or worst case a lack of refrigerant due to a leak somewhere.
Is the evaporator fan working or not, you didn't say?
If not, here's the [document|32619|tech sheet] for the model.
Enter the diagnostic test mode as described by the sheet and run Service test #3 to see if the evaporator fan motor circuit is OK or not.
If the fan is OK then depending on your location, you may need a licensed refrigerator repairer to check the sealed system due to the environmental regulations regarding the handling of refrigerant gases.
If there is a problem with the sealed system then according to the [link|https://www.searspartsdirect.com/manual/4gnkvyrmjc-000593/kitchenaid-kfiv29pcms02-bottom-mount-refrigerator-parts|warranty] in the user manual (see p.40, there may be an up to 10 year warranty on the sealed system. Just something to consider if it is still within the warranty period
+
+
=== Update (02/05/24) ===
+
@justinchastain
+
+
What are the actual temps in the refrigerator and freezer compartments?
+
+
Is the compressor running constantly trying to drive down the temp in the freezer compartment?
+
+
If the compressor is not running continually, but stops occasionally for some minutes, before starting again, then the control thinks that the temps are OK.
+
+
Perform ''Test #1 FC thermister test'' to make sure that the freezer temperature thermistor is OK
+
+
If the temp in the refrigerator compartment is in the range 33°F → 41° then this is in the acceptable range for the refrigerator compartment but if the temp in the freezer compartment is not between -5°F → 5°F then the compressor should be running continually trying to get the freezer temp down to that level.
+
+
There are two evaporator units in the model i.e. one in the refrigerator compartment and one in the freezer compartment. The control board will operate the 3 way valve in the sealed system (part # W11580434) so that the refrigerant will not go to the refrigerator evap unit as the refrigerator is cold enough but will go to the freezer evap unit to get it to the correct temp.
+
+
If the FC thermister tests OK and the compressor is running continually it may be a problem with the 3 way valve. Same problem as testing for a leak or lack of refrigerant, as it is also in the sealed system unless it is an electrical problem in controlling the valve.
Ice build up on the pipes from the evaporator unit could be caused by a faulty evaporator fan, a blockage in the evaporator unit or worst case a lack of refrigerant due to a leak somewhere.
Is the evaporator fan working or not, you didn't say?
If not, here's the [document|32619|tech sheet] for the model.
Enter the diagnostic test mode as described by the sheet and run Service test #3 to see if the evaporator fan motor circuit is OK or not.
If the fan is OK then depending on your location, you may need a licensed refrigerator repairer to check the sealed system due to the environmental regulations regarding the handling of refrigerant gases.
-
If there is a problem with the sealed system then according to the [https://www.searspartsdirect.com/manual/4gnkvyrmjc-000593/kitchenaid-kfiv29pcms02-bottom-mount-refrigerator-parts|warranty] in the user manual (see p.40, there may be an up to 10 year warranty on the sealed system. Just something to consider
+
If there is a problem with the sealed system then according to the [link|https://www.searspartsdirect.com/manual/4gnkvyrmjc-000593/kitchenaid-kfiv29pcms02-bottom-mount-refrigerator-parts|warranty] in the user manual (see p.40, there may be an up to 10 year warranty on the sealed system. Just something to consider if it is still within the warranty period
Hi @justinchastain
Ice build up on the pipes from the evaporator unit could be caused by a faulty evaporator fan, a blockage in the evaporator unit or worst case a lack of refrigerant due to a leak somewhere.
Is the evaporator fan working or not, you didn't say?
If not, here's the [document|32619|tech sheet] for the model.
Enter the diagnostic test mode as described by the sheet and run Service test #3 to see if the evaporator fan motor circuit is OK or not.
If the fan is OK then depending on your location, you may need a licensed refrigerator repairer to check the sealed system due to the environmental regulations regarding the handling of refrigerant gases.
If there is a problem with the sealed system then according to the [https://www.searspartsdirect.com/manual/4gnkvyrmjc-000593/kitchenaid-kfiv29pcms02-bottom-mount-refrigerator-parts|warranty] in the user manual (see p.40, there may be an up to 10 year warranty on the sealed system. Just something to consider