X & Z Stalls
This occurs when the gantry cannot move vertically due to resistance or obstruction.
What is a Z Stall?
This mode deepens coil cooling before a defrost to improve recovery performance.
What is a Super Chill?
The load tray struggles to return home and stalls at ~5000 encoder counts after a transaction. The FIRST thing you should verify is this.
What is checking for vaccines or obstructions in the tray?
Before a technician vacuums the filters, this system must be shut down to prevent damage.
What is the thermal system?
When reviewing Main Putty, multiple entries with the same timestamp indicate what?
What is multiple systems logging at once?
After a unit experiences X stalls, what test must be ran to determine the severity?
What is an X-axis Motor Margin Test?
If coil in and coil out temperatures separate significantly during defrost recovery, this condition is occurring.
What is coil separation?
A Load Tray that comes out crooked typically indicates this.
What is a broken Load Tray Coupler?
After replacing a thermal or compressor board, this must be done before anything else works correctly.
What is running a full firmware update (SuperBundle)?
This type of data in Main Putty is critical for diagnosing movement stalls.
What are motor encoder positions?
An X-Axis Motor Margin Test result of this value or higher requires immediate mechanical dispatch.
What is 80% or higher?
If the freezer is too warm while the fridge is too cold, this mechanical issue is a likely cause.
What is a freezer door seal problem (or V’d door)?
If home/away sensors are not triggering consistently, the system will fall back into this mode to stay operational.
What is single sensor mode?
Following a manual cooldown, support is REQUIRED to perform this action before considering the unit stable.
What is running a defrost cycle and actively monitoring recovery?
True or False: Reviewing a single log file is enough to find the root cause of an issue.
What is false?
If VB fails and the EE cannot move freely, you should move the EE in this pattern to attempt recovery.
What is 100 count increments up to ~500 counts in both directions?
If ice builds up and restricts airflow at the freezer duct exit, the system will struggle primarily with this.
What is proper airflow into the freezer?
Where does the Load Fridge Door Seal go?
What is on the affixed/topside of the LFD?
After a manual cooldown, what needs to happen for the system to be considered thermally stable?
What is the unit taking control of its thermal loops (fridge/freezer/coil)?
This tool is recommended for viewing Main Putty logs with color coded severity levels.
What is Notepad++?
If a Z stall occurs around ~36,000 encoder counts, this is the most likely cause.
What is contact with the Freezer Doors.
This is what the command 'crcfcon' in thermal putty tells you.
What are the speeds of the circulation, storage, and booster fans?
This is a common cause of tambour door stalls that is seen after a unit has been moved.
What is a bend in the LD guide?
Before replacing a PC, you are required to pull and transfer four critical file types to your local machine.
What are JSON config files, the last database backup, corner data files, and SIT files?
This is how many sections are on a single Thermal Putty log line.
What is seven?