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HTP Hydra Smart RT-150 - User Manual

HTP Hydra Smart RT-150
73 pages
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Hydra Smart
Tankless Water Heaters
Installation
Start-Up
Maintenance
Parts
Warranty
RT-150 / 199* Models
* “LP Denotes Propane Gas
This manual must only be used by a qualied installer / service technician. Read all instructions in this manual before installing.
Perform steps in the given order. Failure to do so could result in substantial property damage, severe personal injury, or death.
The manufacturer reserves the right to make product changes or updates without notice and will not be held liable for
typographical errors in literature.
NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE.
272 Duchaine Blvd. New Bedford, MA 02745 www.htproducts.com
lp-505 Rev. 000 Rel. 015 Date 1.7.20
The surfaces of these products contacted by potable (consumable) water contain less than 0.25% lead by weight as required
by the Safe Drinking Water Act, Section 1417.
Improper installation, adjustment, alteration, service, or maintenance could void product warranty and cause property
damage, severe personal injury, or death.
California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth
defects, or other reproductive harm.

Table of Contents

Other manuals for HTP Hydra Smart RT-150

Questions and Answers

  • S
    Samuel SmithSep 9, 2025
    What does AGM Error mean on my HTP Hydra Smart RT-150 Water Heater?
    • R
      robin92Sep 9, 2025
      If your HTP Water Heater displays an 'AGM Error', press the Power button to clear the Error Code. If the error happens again: * Turn the power OFF and ON at the main power switch internal to the water heater. * Ensure the fan inlet hole is completely open after turning the power OFF and ON. * Check wiring connections to the AGM, ensuring all are secure. * Check AGM operation. * Replace AGM components. If the problem persists, replace the main control.
  • C
    Charles StaffordAug 22, 2025
    What to do if there is a water leak in my HTP Water Heater?
    • M
      Molly CannonAug 22, 2025
      To address a water leak in your HTP Water Heater (150 models only), first, turn the power off. Next, valve off the water heater to isolate it from the system. Finally, call a qualified installer or service technician to diagnose and repair the source of the leak.
  • S
    Stephen HuntSep 7, 2025
    What does 'Burner overheat switch open' mean on my HTP Hydra Smart RT-150?
    • S
      Sean BarnettSep 7, 2025
      If your HTP Water Heater displays a 'Burner overheat switch open' error, press the Power button to clear the Error Code. If the error happens again: * Check burner overheat switch connections, ensuring connections are secure. * Check switch resistance; if resistance is not zero, replace the switch. If the problem persists, replace the main control.
  • C
    Charles ThompsonSep 5, 2025
    What to do if my HTP Water Heater shows a 'Poor Communication' error?
    • B
      Benjamin RichSep 6, 2025
      If your HTP Water Heater displays a 'Poor Communication' error, the Error Code will disappear when the condition is remedied. If the error happens again: * Check connections from the main control to the display panel. If the problem persists, replace the display and/or the main control.
  • B
    Brittany WilliamsSep 3, 2025
    How to fix DIP Switch error on HTP Hydra Smart RT-150 Water Heater?
    • B
      Brian MurphySep 3, 2025
      If your HTP Water Heater displays a 'DIP Switch is Abnormal' error, the Error Code will disappear when the condition is remedied. If the error happens again: * Check dip switches, ensuring they match the ratings plate requirements of the water heater. See dip switch details in this manual for default settings. If the problem persists, replace the main control.
  • S
    Scott BeckSep 2, 2025
    What does 'Register, Ram, Rom, I/O Port, AD Abnormal' mean on HTP Hydra Smart RT-150?
    • W
      welchjasonSep 2, 2025
      If your HTP Water Heater displays an error related to 'Register, Ram, Rom, I/O Port, AD Abnormal, Important EPROM Data or Safe Data Abnormal', the Error Code will disappear when the condition is remedied. If the error happens again: * Turn the power OFF and ON at the main power switch internal to the water heater. If the problem persists, replace the main control.
  • M
    Matthew BeckerAug 31, 2025
    How to solve 'Fan Speed too high with flame on' error on HTP Hydra Smart RT-150 Water Heater?
    • S
      Samuel PriceAug 31, 2025
      If your HTP Water Heater shows a 'Fan Speed too high with flame on' error, note that the Error Code will disappear unless it occurs five times in ten minutes. Press the Power button to clear the Error Code. If the error happens again: * Check the vent connections for blockages. * Check the burner assembly. * Check fan operation. If the fan appears to be operating normally but RPMs are too low or too high, replace the fan. If the problem persists, replace the main control.
  • S
    Stacy DavisAug 30, 2025
    Why is my HTP Hydra Smart RT-150 Water Heater detecting flame before ignition?
    • L
      lisa36Aug 30, 2025
      If you encounter a 'Flame Signal Detected before Ignition' error on your HTP Water Heater, the Error Code will disappear when the condition is remedied. If the error happens again: * Check the water heater cover, ensuring it is secure, as the flame detection sensor can detect an external light source. * Check the flame detection sensor, ensuring connections are secure. Normal operating settings are more than 2.5DC before ignition, less than 2.5DC after ignition. If the problem persists, replace the main control.
  • M
    Mary MorganAug 29, 2025
    What does 'Fan Speed Feedback Signal Abnormal' mean on my HTP Hydra Smart RT-150?
    • R
      Robert NunezAug 29, 2025
      If your HTP Water Heater displays a 'Fan Speed Feedback Signal Abnormal' error, the Error Code will disappear when the condition is remedied. If the error happens again: * Check the connections to the fan, ensuring all are secure. * If the fan does not rotate during the ignition sequence, check for 120V power at the fan connection. If 120V power is present at the control, replace the fan. If the blower does not have 120V power, check power at the control. If 120V power is not present at the control, replace the control. If the problem persists, replace the main control.
  • D
    Dalton RogersAug 27, 2025
    How to troubleshoot high exhaust temperature on HTP Water Heater?
    • D
      Dwayne RamirezAug 28, 2025
      If the exhaust NTC on your HTP Water Heater detects a vent temperature greater than 149oF (65oC) (or 190oF [87.8oC] when the High Temp set point is selected), the Error Code will disappear when the condition is remedied. If the error happens again: 1. Check if the dip switch High Fire setting is ON (switches 6 and 7 should be OFF for normal operation). 2. Check the exhaust temperature sensor, ensuring connections are secure. 3. Check the sensor resistance; if resistance is zero, replace the sensor. 4. Check the exhaust vent for blockage. If the problem persists, replace the control or the heat exchanger.

HTP Hydra Smart RT-150 Specifications

General IconGeneral
BrandHTP
ModelHydra Smart RT-150
CategoryWater Heater
LanguageEnglish

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