WARRANTY INFORMATION
Emerald Energy Pty Ltd warrants this heat pump to the original purchaser.
Emerald Energy Pty Ltd warrants each new heat pump is free from defects in material and workmanship under normal use and service from the date of
purchase. 2 year labour warranty. 7 years warranty on the tank, and 5 years on the rest of the system. *Subject to terms and conditions.
This warranty does not cover damage resulting from accident, misuse or abuse or lack of reasonable care of the product.
In no case shall Emerald Energy Pty Ltd be liable for any incidental or consequential damages for breach of this or any other
warranty express or implied whatsoever.
For full warranty details visit our website emerald-energy.com.au
Emerald Energy Pty Ltd
ABN 86 632 172 368
2/29 Mitchell Rd Brookvale NSW 2100
2022.03
FAULT
POSSIBLE CAUSE
DETECTION AND ELIMINATION METHOD
Discharge pressure is
too high
There is air on the non-condensable gas existed
in the system
Water heat exchanger is scaling or fouling
blockage.
The circulation water volume is not enough.
Refrigerant charging is too much.
Vent the air from water heat exchanger.
Wash and clean the water heat exchanger. Examine the water system
pipeline and pump.
Drain part of the refrgerant.
Discharge pressure is
too low
Liquid refrigerant flow through the evaporator to
compressor, which makes foam for the frozen oil.
Suction pressure is too low.
Refrigerant charging is too low. The refrigerant air
goes into liquid pipeline
Examine and adjust the expansion valve, make sure the expansion
valve temperature sensor bulb is connected with the air suction pipe,
and absolutely insulated with the ambient environment.
Please refer to "Flourine filling if suction pressure too low"
Suction pressure is too
high
Discharge pressure is too high.
Refrigerant charging is too much.
Liquid refrigerant flow through evaporator to
compressor.
Drain part of the refrigerant.
Examine and adjust the expansion valve, make sure the expansion
valve temperature sensor bulb is connected with the air suction pipe,
and absolutely insulated with the ambient environment.
Suction pressure is too
low
Ambient temperature is too low.
The evaporator liquid inlet or compressor suction
pipe is blocked, expansion valve unadjusted, or
failed.
The refrigerant is not enough in the sytem.
Adjust suitable overheat temperature, examine whether there is Fluo-
rine leakage from the expansion valve temperature sensor bulb.
Examine Fluorine leakage.
Examine the installation condition.
Compressor stopped
because of high pres-
sure protection
The water inlet temperature is too high. Circulation
water is not enough.
The high pressure stop setting is not correct. The
air suction overheats.
Too much flourine filling.
Examine water system pipeline and water pump.
Examine the high pressure switch.
Examine the Fluorine filling volume, drain part of refigerant.
Compressor stopped
because of motor over-
loading
The voltage is too high or too low.
Discharge pressure is too high or too low.
Device loading failure.
Ambient temperature is too high.
Motor or connecting terminal has short circuited.
The voltage should be controlled within more or less 20V than rated
voltage, and phase difference within
+
- 30%
Examine the compressor current, compare with the full loading current
indicated in the user manual.
Improve air ventilation.
Compressor stopped
because of built-in
thermostat
The voltage is too high or too low.
Discharge pressure is too high.
The refrigerant in the system is low.
Examine the voltage to make sure it is within the specified range.
Examine the discharge pressure and find ou the reason.
Examine whether there is a Fluorine leakage.
Compressor stopped
because of low voltage
production
Dry filter clogging.
Expansion valve failure.
The refrigerant is low.
Examine, maintain, or change dry filter.
Adjust or change expansion valve.
Fill refrigerant
High noise of
compressor
There is liquid hammer for liquid refrigerant flow-
ing through evaporator to compressor.
Adjust liquid supply. Examine whether normal for the expansion valve
and air suction over heat degree.
Compressor does not
start
Over current relay is tripped, insurance is burn.
The control circuit is not connected.
No current.
The pressure is too low, which can not conduct
the pressure switch.
The contactor coil is burn out.
Water system failure, relay is tripped.
Set the control circuit to manual mode. Restart the compressor after
maintenance.
Examine controlling system.
Examine power supply.
Examine whether the refrgerant is too low.
Reconnect, adjust two of the wiring.
TROUBLE SHOOTING
