24
KI-OM-0591 Rev 3
Troubleshooting
5.2
General Troubleshooting Chart
Problem
Possible Cause
Solution
Low output pressure.
Leaking relief valve.
Check relief valve function, repair or
replace.
Water inlet to system low or turned
off.
Turn inlet water on. Check water
supply and hose sizing.
Insufficient flow in water feed lines
to system.
Check inlet hose diameter is sufficient
and is not restricted or crushed.
Low pressure in umbilical line or
system.
This is expected. As the system’s
output depends upon the flow
resistance, if there is low resistance
the pressure will be low but the flow
rate will be maintained.
Water will not heat.
Circuit breakers tripped in heating
circuits.
Switch off - reset breaker(s). If
breaker(s) trip again when switched
on, investigate cause. (In an
emergency faulty element may be
switched off, leaving other banks
operational).
Manual over board dump valve
open.
Close manual overboard dump valve.
Temperature control valve is stuck
in the fully open position due to
valve or actuator failure.
Check the actuator function by
manipulating the actuator manually. If
the valve cannot be turned manually
service or replace the control valve. If
the actuator does not return when
release from manual disturbance
repair of replace the actuator.
Relief valve will not close. Dirt lodged in seat of relief valve.
Clean set of relief valve, reset and
test.
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