5 TROUBLESHOOTING
5-2
Therma-Flow
®
PLUS
IOM 09900002
Revision C 08/15/21
© 2021, Encon Safety Products, Inc.
Component
Solution
Complete Unit
Freezing
If the entire unit is freezing it is typically a result of the following:
• Electrical power failure — do the following:
1. Switch off electrical power to the system before testing.
2. Check power supply for proper voltage and circuit breaker for
proper sizing. Shower maximum amperage load is shown on
the Encon
®
equipment label located on the junction box.
3. With continuity tester, check to see that bus wires are intact and
nothing is grounded out between the metal sheath and bus
wires.
• If applicable, ensure the radiant heater thermostat and
contactor are operating. See “4.10 Enclosure” on page 4-22.
Applicable on units with Therma-Flow
®
shower station:
• Ensure the heat trace cable is operating. See “4.7 Heat Trace
Cable” on page 4-12.
• The thermostat is incorrectly wired or thermostat failure. See
“4.8 Thermostat” on page 4-13.
• If fluid is evident on the insulation. Fix the leak.
5.3 Electrical
Component
Solution
Circuit breaker
(supplied
by others)
tripping
• Check the ground fault interrupter and reset it if necessary.
• Circuit breaker trip is typically a result of a ground fault or short circuit.
With power disconnected, perform continuity testing (power to
ground). Areas of potential failure include:
— Junction box connections.
— Cable termination seal.
— Splice where heat shrink insulators are located.
• Circuit breaker trip can also be attributed to overloading circuit
breakers, i.e., too many devices powered from a single power feed.
Each shower will draw a maximum of 4 amps at cold start up. Cold
start up conditions cause a higher current draw (in-rush current) than
normal. Heat trace cable circuit breakers must be sized with in- rush
current as criteria.
