Takagi T-H3J-DV Service Handbook page 47

Table 18.
Mode Number Descriptions
Mode # Whole Multi-Unit System information (#0)
1 Total system flow rate 0 to 999 (GPM)
BTU requirement for
2
the Multi-System
Quantity of connected
3
water heaters
Priority water heater
4
unit
Quantity of
5 operational water
heaters
6 Set temperature
Operation time during
7
current rotation
ON/OFF cycles during
8
current rotation
9
10
11
Inlet temperature of
12
the priority unit
Outlet temperature of
13
the priority unit
14
15
16
17
18
On-Demand Water Heater Service Handbook for 240, 340 & 540 Condensing Models
0 to 999 (×kBTU/h)
1 to 4 (units)
1 to 4 (unit #)
0 to 4 (units)
100 to 185 °F
0 to 720 (minutes)
After 720, the next
rotation occurs
0 to 100 (cycles)
After 100, the next
rotation occurs
N/A
32 to 212 (°F)
Over 212 °F = E5,
Under 32 °F = E0
N/A
Unit information (#1 to #4)
Total operation time 0 to 999 (x 100 hours)
0 to 999
ON/OFF cycles
(× 1,000 cycles)
Fan motor speed 0 to 999 (× 10 rpm)
Inlet temperature
32 to 212 (°F)
Heat exchanger
Over 212 °F = E5,
temperature (540
Under 32 °F = E0
(T-H3) model only)
Outlet temperature
Air-Fuel ratio rod
0 to 999 (μA)
current
Flow rate 0 to 999 (× 0.1 GPM)
Energization time of
0 to 999 (× 100 hours)
the unit
Integrating flow of the
0 to 999
unit
(× 10,000 gallons)
Error code history: displays the most recent
error code
Error code history: displays the 2nd most
recent error code
Error code history: displays the 3rd most
recent error code
Clears the memory in error code history*
Integrating output of
0 to 999 MBTU/h
the unit
0 to 16,
Air-fuel ratio stage
normal condition=6
32 to 212 (°F)
Exhaust temperature
Over 212 °F = E5,
(Indoor models only)
Under 32 °F = E0
N/A
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