RM Cylinders Intercyl - Fault Finding: Thermostats and Immersion Heater; Dual Thermostat - Fault Finding; Immersion Heater - Fault Finding

ISSUE 2016 Rev 1 - Installation Manual
3
RM Cylinders
DUAL THERMOSTAT - FAULT FINDING
I
MMERSION HEATER - FAULT FINDING
Is the Limit Stat reset
& working?
Dual Thermostat
NO
Is the Control
Stat Working?
NO
Is the Dual Thermostat
working?
YES
YES
NO
No fault
with the Dual Thermostat.
No fault
with the Dual Thermostat.
If test fails replace
Dual Stat.
If test fails replace
Dual Stat.
Test Stat continuity
Reset Limit Stat.
Test Dual Stat continuity.
Is there power to the
Element/Thermostat?
Has the thermostat
tripped?
Does the Immersion
Heater work?
Find & correct
supply problem.
Reset circuit breaker.
Immersion Heater
YES
NO
Has the circuit breaker
tripped?
NO
YES
NO
YES
Is the Element an
open circuit?
NO
NO
YES
YES
YES
Has the Element
a low I/R?
NO
Reset Thermostat
Replace Thermostat
(Make note of reference on the stat)
Replace Element
(Make note of reference on the cap)
No fault with
Immersion Heater
13