Temperature Control Diagnostic Codes
14 3A1570V
E99: Loss of communication
Communications between the display and the
temperature control module has been lost. When
communication is lost, the display will show E99.
1. Check all wiring between the display and the
temperature control module. Pay close attention to
the wire crimping on plug J13 for temperature
display and connector for control module.
2. Measure the incoming voltage to the module (it
should be ~ 200-240VAC).
3. If it was only receiving 1 leg of the 200-240Vac the
board may light up, and still not function properly.
Correct the incoming voltage problem.
Step 2 measures line voltage and should be done by
a qualified electrician. If work is not performed
properly it may cause electric shock or other serious
injury.