Keltech SNA-36 - User Manual

Questions and Answers

J
jeremyperryAug 1, 2025
How to troubleshoot a Keltech SNA-36 with no power?
- S
  Shane JamesAug 1, 2025
  If your Keltech Water Heater has no power, start by verifying that the power is on. Then, check the continuity of all internal fuses in the control transformer, heating elements, or optional Fused Disconnect circuits. Ensure all field service circuit breakers or fuses are working. Also, check the safety interlock door switch to ensure it's not misadjusted or the enclosure door isn't open. Verify the system temperature limit control hasn't activated due to excessive heat exchanger temperature or a faulty sensor. Look for loose or disconnected wires. Finally, check the incoming service connection, ensuring the voltage matches the nameplate rating.
M
masonfrankAug 11, 2025
What to do if Keltech Water Heater does not work or works intermittently?
- H
  Holly HoffmanAug 11, 2025
  If your Keltech Water Heater isn't working or is working intermittently, first check that the flow sensor at the inlet is spinning when water is running. Check if the FLCB light is on in Low flow (> 1.5 gpm). In High flow (> 15gpm) both the low flow light and high flow lights should be illuminated. Ensure adequate water flow through the heater to activate the flow sensor at 1.5 gpm. Also, verify the heater is wired with the correct breaker and wire size. Finally, confirm the unit receives voltage from all 3 phases of the power source, and take a load voltage reading.
Y
yangleslieAug 22, 2025
Why Element Load Bank 1–2 or 3–4 is not energized in Keltech SNA-36 Water Heater?
- R
  Robin MossAug 22, 2025
  If Element Load Bank 1–2 or 3–4 is not energized on your Keltech Water Heater, check the FLCB with the corresponding light. Bank 1–2 on the front bezel corresponds to Bank 1 on the FLCB, and Bank 3–4 corresponds to Bank 2. If the light is off and there is power, check if the water temperature exceeds 175°F. If so, decrease the water temperature and restart the system.

Summary

Product Options

AL3 & AL3-SL Temperature Alarms

Alerts for over or under temperature situations.

GF (Ground Fault)

Detects electrical leakage for equipment protection.

ENHT Freeze Protection (ENHT & ENHT30)

Provides protection against freezing temperatures.

Special Installation and Operating Instructions

EXP2 & EXP2 LC Installation Notes

Notes for installing EXP2 and EXP2LC options in hazardous locations.

Keltech SNA-36 Specifications

General

Model	SNA-36
Category	Water Heater
Voltage	240V
Phase	Single Phase
Maximum Amperage	150A
Power	36 kW
Frequency	50/60 Hz
Heating Element	Copper
Temperature Control	Digital