System Diagnostics - Electra WNG 7 Service Manual

CONTROL SYSTEM
12.2

System Diagnostics

Pressing Mode button for 5-10 seconds in SB or any other operation mode will activate
diagnostic mode by the acknowledgment of 3 short beeps and lighting of COOL and
HEAT LEDs.
In diagnostic mode, system problems will be indicated by blinking of Heat & Cool LEDs.
The coding method will be as follow:
Heat led will blink 5 times in 5 seconds, and then will be shut off for the next 5 seconds.
Cool led will blink during the same 5 seconds according to the following table:
No
1 RT1 is disconnected
2 RT1 is shorted
3 (Reserved)
4 RT2 is disconnected
5 RT2 is shorted
6 (Reserved)
7 RT2 temp reading doesn't change
8 RT3 is disconnected
9 RT3 is shorted
10 (Reserved)
11 RT3 temp reading doesn't change
12 RT2 & RT3 temp reading doesn't change
○ - ON, ● - OFF
Notes:
1. If faults occur in more than one thermistor (except case number 12 on
table above), only one fault will be indicated according to the following
RT3, RT2, RT1.
2. A/C will jump out to normal mode if sending a command by the R/C in
system diagnostics mode. If this command from the R/C contain a Group
ID will become the new Group ID of the ELCON unit.
12-34
Problem
Revision Y05-03
CONTENT
○ ○ ○ ○
○ ● ● ●
○ ● ● ●
○ ● ● ○
● ○ ● ●
● ○ ● ●
● ○ ● ○
● ○ ● ○
● ● ○ ●
● ● ○ ●
● ● ○ ○
● ● ○ ○
● ○ ○ ○
order:
ID, this
Service Manual - WNG
○
●
○
●
●
○
●
○
●
○
●
○
○
the
the