GE PANDA Service Manual page 93

4.4.5.5 Sys Fail 05
ADC Configuration Error or ADC Failure: Reference channel outside of range (1597-1775)
Possible Causes
Improper NVRAM
initialization
4.4.5.6 Sys Fail 06 [0B XX 00 00]
Over temp T-Stat is open (new addition to MAP Version 1.1.0 and later).
(Refer to section
Possible Causes
Open overtemp
T-Stat
Defective T-Stat or
Harness
Defective Power PCA
4.4.5.7 Sys Fail 08 [xx xx 00 00]
Touch panel button shorted.
Possible Causes
Pressing only one
button during
Power ON
Bad Touch Panel
Control PCA failure
Service Manual
Step Troubleshooting Procedure
1. Reset NVRAM defaults.
2. Replace Control PCA
"4.4.5.13 Sys Fail 11 [AA AA AA AA]"
Step Troubleshooting Procedure
Check for blockage of heater duct and heater head
1.
vents.
Check T-Stats or Harness by disconnecting J20 on
the Power PCA. Using Ohm Meter on the harness
2. connector, verify each T-Stat is closed by
measuring < 1 Ohm across the two pins.
(Refer to the comments to right.)
3. Replace Power PCA.
Step Troubleshooting Procedure
If trying to enter Service Mode, only one button is
pressed. Make sure both buttons are depressed
when attempting to enter Service Mode.
Enter Service Mode diagnostics and check button
1. function. Verify Touch Panel operation using
Service Mode to tell which buttons are pushed.
Check connection from Touch Panel to Control
2.
PCA.
3. Disconnect Touch Panel connector to Control PCA.
4. Re-Power ON to test for System Failure 8.
If OK then replace Touch Panel.
5.
If still bad, replace Control PCA.
for additional information.)
Chapter 4: Troubleshooting
Troubleshooting Tables
Comments
No service tool
available at this
time.
Comments
East T-Stat: pins
3 and 4
West T-Stat: pins
7 and 8
Comments
4-31