Other Issues such as:

  • Helios not heating, but you have no alarm?
  • System Pressure Alarm? 
  • Water Leaking from Heater Purge? 
  • Water Leaking from Heater Flanges? 


Send an email or give a call. In MANY cases, issues can be resolved through a few quick questions and troubleshooting steps. No need for service trips, long lead times or waiting to hear back. 

We have developed the skill set and tools to properly test and repair your Helios52 and LUFRAN or PROCESS TECHNOLOGY UPDI Water Heater through decades of experince, including field service, failure analsys, design and engineering of the heaters and updates to the legacy designs.


WebbTech uses special tooling and test equipment to evaluate the RHL, sensors such as the PT-GI-C and control boards such as the OT-2B, SSR packs such as the 9501 and temperature controllers such as the Eurotherm 808 or 3508 to determine root causes, track the failure modes and locate a solution to prevent similar issues from occurring on your Helios52, LUFRAN or PROCESS TECHNOLOGY UPDI Water Heater again. . 

Help with some common Issues with Generation 1 and 2 Legacy Lufran and Helios Heaters

Over-temp Alarm:

1. Open Process Over-temp TC. (TC-DI-KT)  

Step A: Locate the TC in the Outlet Manifold of the Heating Column. Disconnect the TC at its 4-pin connector and check the resistance between   pins 1 and 4. Acceptable range is 4-26 Ohms.

Step B: If found to be outside of range, a replacement is required. Check Here for a replacement.   


2. Open Element Over-temp TCs. 

Step A: Disconnect the TCs at the 4-pin connector located on the top side of the Heating Column and check the resistance between pins 1 and 2 and 3 and 4. Acceptable range is 8-32 Ohms. 
Step B: If found to be outside of range, a replacement Heating Column (RHL) may be required. Check Here for additional assistance or Here for a replacement. 


3. Non-Functional Over-temp Circuit Board. (OT-2B)

Step A: Locate the OT-2B in the high voltage Power Board section of the Heater.

 - Check across positions 1 and 2 on the board for 12VDC output status while under power. Acceptable range is 11.5 - 14.5 VDC.

 - Check across positions 7 and 8 on the board for alarm relay status. Acceptable range is .1 - 1 Ohm when under power and no alarm signal      is present. 
Step B: If any are found to be outside of range, a replacement may required. Check Here for additional assistance or Here for a replacement.   



Q: What causes HELIOS52 and LUFRAN Failures? 

A: Most commonly, failures or alarms on the Helios51 or LUFRAN are due to a failed sensor such as the TC-DI-KT or a failed board such as the CC-8 or OT-2B. Other times, the failure could be due to a leak in the RHL heater column, such as the RHL52-AC6BA-F. '


Q: What does WebbTech repair on Helios52 or LUFRAN UPDI Water Heater systems? 

A: WebbTech can repair or supply replacement parts for ANY component on the Helios52 or LUFRAN heater, up to and including COMPLETE UPDI Water Heaters. 


Q: If I have a failed RHL such as a RHL52-AC6BA-F, can this be repaired or replaced? 

A: YES, either option is possible. If the heating element within the RHL is still sealed, the RHL CAN be rebuilt. IF the heating element within the RHL is no longer sealed and is leaking, we CAN still repair or rebuild your existing RHL.  

SSR Alarm:

1. Loss of Incoming Facility Supply Phase. 

Step A: Locate the three phase safety contactor in the high voltage Power Board section of the Heater. While under power check voltage to ground at the top of the contactor for all three phases.  

Step B: If a phase is found to be outside of range, check facility wiring. Check Here for additional assistance.   


2. Loss of Incoming Supply Phase after the three phase safety contactor. 

Step A: Locate the three phase SSR Package in the high voltage Power Board section of the Heater. While under power check voltage to ground on the input of each SSR for all three phases.  
Step B: If a phase is found to be outside of range, a replacement safety contactor may be required. Check Here for additional assistance and for a replacement.    


3. Non-Functional SSR or Monitoring Board. (9501)

Step A: Locate the three phase SSR Package in the high voltage Power Board section of the Heater. While under power check voltage to ground on the output of each SSR for all three phases.  
Step B: If any are found to be outside of range, a replacement will be required. Check Here for additional assistance or Here for a replacement.   



Need help with Lufran Helios Tytan Heater. Need CC8 OT2B SLC-5-DS RK-SSR3 TC-DI-KT RHL52 RHL-052