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Hi, I have attached the tech sheet for you. Even though you ran the unit on cold water, it could still bring in some hot water to reach the correct temp the machine thinks cold should be. This may have cause the error. Make sure both hot and cold are hooked up and working. Run through the steps for the error code in the tech sheet Run diagnostics to see if you can find a failure. You tried blowing through which end of the drain hose? Is the unit not draining? Make sure the pressure hose is clear.

Hello
See the 131 page service manual link below. This will give you all the troubleshooting ,diagnostics and access for your #sdgt09 Model.

Hello
The 8C2 error error could have a few possibilities. See the complete diagnostics in the manual links below.
1) Possible defective Mems PBA .
2) A possible PBA wire disconnection.

Hi. Did the tech say why the door needed to be replaced? A broken damaged wire in the door should be the only reason to replace the door that I can think of. I am not finding much info about this issue for this model. I did come across a couple of people with similar models that had broken wires where the wires enter the door through the hinge and another with a loose connector in the same location. I have seen faulty control boards on other brands and models with the same issue. If I recall right, I may have had a bad user interface for one as well. I would have to say wiring or the control board would be the most likely issue. I hope this helps.

Hello
See the compressor diagnostics link below. It will take you step by step through the compressor diagnostics.

Hello
See the ice maker diagnostics link below for your ice maker. I would go to the flow chart on page #4 and go through the flow chart diagnostics. This chart will take you step by step on each component testing and diagnostics.

The Twist-Tray Ice Maker (IM) is a 10 cube ice maker manufactured by Sankyo. It is a single unit with no replaceable parts. The IM operates with DC voltages of 14VDC and 5VDC, and water pressure between 30 and 120 psi. It produces around 3.5lbs of ice per day (4lbs per day if MAX ICE is enabled).
IM timing and logic is controlled by the UI Core Control Board. The IM has the following operational components (Figure 1):
• DC Motor with bi-directional movement
• Bail Arm to sense ice level in the ice bin
• Internal feedback switch to determine motor position
• Thermistor
The DC motor twists the ice tray. Ice is detached by the twisting motion, no heater is needed. The motor also operates the bail arm. The bail arm, and the internal feedback switch, checks if the ice bin is full.
The internal feedback switch helps determine if the ice bin is full and monitors motor shaft
position.
The thermistor senses the temperature of the ice tray to determine if the water is frozen.
(Below 8°F (-13°C) for Normal Ice, 5°F (-15°C) for Max Ice.
The IM has five standard states during normal operation. They are:
1. Homing
2. Filling
3. Freezing
4. Ice Ready
5. Harvesting
Other states include Homing Paused, Harvesting Paused, and IM Jammed.
Homing
When power is initially applied to the IM, it will enter the Homing state. 14VDC is applied to the motor driving it counterclockwise (CCW). The internal feedback switch closes when the ice tray reaches the home (fill) position.
If the IM is not in the Home position after 45 seconds, the IM will enter the Jammed state. The IM will attempt Homing every 60 minutes while in the Jammed state. Filling IM filling is skipped for the first cycle following a power interruption to the refrigerator. This ensures the IM is not overfilled, and results in a 3 hour wait for the first batch of ice to drop.For subsequent cycles, 115VAC is applied to the IM water valve solenoid for 15 seconds, filling the IM with 3.38 fl. Oz.(100ml) of water.The water fill tube has a heater to prevent icing of the fill tube following Filling. At the beginning of the Filling state, the filltube heater, if on, will be turned off. After filling completes, a 20 minute delay timer will begin. After these 20 minutes pass, the fill tube heater will turn on for 90 minutes, or until the beginning of the next fill cycle, whichever comes first. During periods where the IM is inactive (turned off, full ice bin, etc.) it is possible for the fill tube to freeze over. After the IM becomes active again, it may take one or two cycles to thaw the ice maker inlet tube line. Freezing After the 15 second fill time, the IM enters the Freezing state until the ice cubes are ready. The ice cubes are ready after time and temperature requirements are met. Time and temperature requirements vary between normal ice mode, and MAX ICE. In normal ice mode, the thermistor temperature must be at or below 8°F (-13°C). In addition, a minimum of 85 minutes must pass. If the RC or FC door is opened during the Freeze state, the timer is paused until the door is closed and additional time is added. For example, if the FC door is opened for 5 minutes, the timer stops for 5 minutes and 5 minutes are also added to the 85 minute timer for a total of 95 minutes.
In MAX ICE mode, the minimum timer is decreased to 70 minutes, but the thermistor temperature must be at or below 5°F

Hello
There is a training presentation on this product. We do not have a service manual on this product yet. See the training link below. Hope this helps.

This could be an issue with the condenser fan motor. Here is the part number4681JB1029D Below is a link to the repair video.

I recommend replacing the electronic control. Here is the part number for the control. EBR73456502 Below is the link to the repair video.

I recommend replacing the overload protector on the refrigerator. The part number for the overload protector is EBG60663214. Below is a link to the repair video for the overload protector.

This is most likely an issue with the door Mullion. Here is the part number. WR17X13136. Below is a link to the door Mullion repair video.

The issue could be with the freezer evaporator fan. Here is the part number for the fan. WR60X10340. Below is a link to the repair video for the fan.

This could be an issue with the icemaker fan motor. Here is the part number for the motor. WR60X10342 Below is a link to the repair video for the icemaker fan motor.

The issue is probably with the fresh food door switch. Here is the part number. WR23X29161. below is a link to a repair video for the switch.

This could be an issue with the fresh food defrost heater. Here is the part number for the heater. WR51X10132. Below is a link to the defrost heater repair video.

There could be an issue with the defrost heater. here is the part number for the heater. WR51X10132 Below is a link to the video for the fresh food defrost heater.

This could be an issue with the fresh food fan motor. Here is the part number for the fan motor. WR60X29099. Below is a link for the repair video for the fan motor.

This sounds like an issue with the auger motor assembly. Here is the part number for the auger motor assembly. WR60X10345. Below is a link to the repair video.

There is most likely an issue with the water inlet valve. Here is the part number for the valve. WR57X10098 Below is a link to the inlet valve repair video.

The ice maker will probably need to be replaced. Here is the part number WR30X28681. Below is a link to a repair video for the ice maker.