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Page
240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial
Ver. 1.00
CONFIDENTIAL
Mode # Whole multi-unit system information (#0)
Unit information (#1 to #4)
19
N/A
Bypass valve
position**
0 to 999 (x 10 steps)
closed position = 0
20
Ratio of hot water and
cold water**
0 to 999 (%)
21
N/A
22
23
24
25
EEPROM Initialization
Initializes current of gas proportional valve
and fan motor speed*
26
Current value of
proportional valve
0 to 999 (mA)
27
The number of
combustion stages
(The water heater
has 4 stages for
combustion.)
“1” means 1st stage
“2” means 2nd stage
“3” means 3rd stage
“4” means 4th stage
“0” means No burning
28
N/A
29
Estimated output from
computer board
0 to 999 (kBTU/h)
30
Actual output of unit 0 to 999 (kBTU/h)
31
N/A
32
*
EEPROM Initialization of wate heater's computer
: Press the “
INFO
” button on the controller while in mode# 14
and mode# 25 for at least 3 seconds to completely clear the
memory in the error code history.
**540 (T-H3) models only