Overview - Samsung EHS AE050RXYDEG/EU Manual

11. Trouble shooting

11.1 Overview

Fault
No water flow from
hot taps
Water from hot taps
is cold.
Intermittent water
discharge
Excessive hot water
from taps
The compressor does
not start
After commissioning
the system makes a
gurgling noise.
Installer reference guide / Mono tank integrated type
Possible cause
• Main water supply closed.
• Strainer blocked.
• Cold water inlet combination valve incorrectly
fitted.
• Immersion heater not switched on.
• Immersion heater thermal cut-out has
operated.
• FSV set to space heating or not enabled.
• Boiler not working.
• Diverter valve not operating correctly.
• Reduced internal expansion.
• Thermal control failure.
(Note water will be hot).
• Cylinder thermostat set to high.
• Faulty cylinder thermostat.
• When the water inlet temperature is over
60 ℃, the compressor does not work. (it is
not an error) only the pump works, and if the
water inlet temperature is below 60 ℃, the
compressor will work.
• There is air in the system.
• Incorrect hydraulic balance.
• Various malfunctions.
Remedy
• Mains water supply open.
• Clean strainer.
• Fit the cold water inlet combination valve
correctly.
• Check and switch on.
• Check and reset button.
• Check and set to domestic hot water.
• Check DHW operation. If fault suspected,
consult installer or boiler manufacturer.
• Check wiring and/or plumbing connections to
diverter valve.
• Repressurize expansion vessel. Follow cold
water discharge.
• Switch off power to immersion heater(s) of
the unit. When discharge has stopped, check
thermal controls, replace if faulty.
• Adjust cylinder thermostat.
• Replace faulty thermostat.
• Check wiring on cylinder thermostat.
• I f the water inlet temperature is below 60 ℃,
the compressor does not work:
– Check if outdoor unit is thermo on.
– Check error details on the outdoor unit.
• Purge air from the system by opening the
automatic air vent.
1 Perform hydraulic balancing to assure that
the flow is correctly distributed between the
emitters.
2 If hydraulic balancing is not sufficient,
change the pump limitation settings [FSV
#4051 Setting], a design issue is present in
the system.
• Check the installation status or whether the
system is working properly.
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