-84-
8. FLAME CURRENT DISPLAY
♦
This Heater is provided with the self-diagnosis circuit by which if the Heater
operation becomes inoperable (unburnable) for some reason, inspection and
repair can be given according to the “Error(E) Display”.
♦
This Heater is provided with the Flame Current Display Function ,
A digital display which shows the electric current so that the consumer can check to see
if the combustion is normal.
How to Display
The above Function display the flame current only while the button
9
Min.” of “Room
Temperature / Time Setting” is pressed for 3 sec.
The display function shows the flame current with sixteen decimal numbers in the display,
as shown in Graph 1. The relationships between flame current and decimal display are
shown in Table 1 for flame currents in the forced burning timing (approximately 2 min. and
30 sec.) and in Table 2 for those after the forced burning timing.
What is LSB Least-Significance-Bit
How to calculate
Digital display*
Flame Current (LSB values) = (2
nd
. row) x 16 + (1
st
. row)
Example
Digital Display 4A
→
4 x 16 + 10 = 74 LSB
Digital Display CB
→
12 x 16 + 11 = 203 LSB
Graph 1, from [Table 1] on next page
74LSB = approx. 0.7 µA (forced burning
timing)
203LSB = approx. 0.15 µA (forced burning
timing)
♦
The combustion is normal, if the display
shows a number less than the forties by
direct reading.
SYSTEM
DIGITAL DISPLAY
16 decimal
0
1
2
3
4
5
6
7
8
9
A
b
C
d
E
F
10 decimal
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15
Until Forced
Burning Timing
After Forced
Burning Timing
1
2
