Takagi T-H3-DV Service Handbook

TROUBLESHOOTING
TROUBLESHOOTING
On-Demand Water Heater Service Handbook for 240, 340 & 540 Condensing Models • 
* **These settings are not listed in the 240(T-H3J),340(T-H3S), and 540(T-H3) installation manual.

Elevaon Level
DIP switch sengs
Output
reducon
Fan mot
or
speed
change
No.2 No.3 No.4
0 to 2,000 .
0 (DEFAULT) OFF OFF OFF N/A N/A
1** OFF ON OFF N/A 3 %
2,000 to 4,000 . 2 OFF OFF ON -11 % 7 %
4,000 to 6,000 . 3* ON OFF ON -14 % 9 %
Special funcon** ON OFF OFF N/A -7 %
Table 14: Outdoor model, 540 (T-H3) - Propane
Apply the altitude setting by adjusting DIP switches 2, 3, and 4 on the lower bank.
See Figure 14, page 28.
Elevaon Level
DIP switch sengs
Output
reducon
Fan mot
or
speed
change
No.2 No.3 No.4
0 to 2,000 .
0 (DEFAULT) OFF OFF OFF N/A N/A
1** OFF ON OFF N/A 6 %
2,000 to 4,000 . 2
OFF OFF ON -9 % 14 %
4,000 to 6,000 . 3*
ON OFF ON -12 % 18 %
Special funcon** ON OFF OFF N/A -7 %
Table 15: Outdoor model, 540 (T-H3) - Natural Gas
Apply the altitude setting by adjusting DIP switches 2, 3, and 4 on the lower bank.
See Figure 14, page 28.
* If the abnormal sound problem persists even with “Level 3” setting, please contact our Technical Service
Department for advice. Note that there are many high risks associated with manually changing manifold
pressure.
**These settings are not listed in the 240(T-H3J),340(T-H3S), and 540(T-H3) installation manual.
WARNING
Failure to properly set the DIP switches could cause carbon monoxide poisoning, resulting in severe personal injury or death.

Takagi T-H3-DV Specifications

General

Brand	Takagi
Model	T-H3-DV
Category	Water Heater
Language	English