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1. 

Press buttons SET and SERVICE for 5 seconds. 

2. 

Press SELECT button. 

3. 

Unlock COOL mode with ▲/▼. 

4. 

Press SET button. 

  If Dry Concrete has been set, Dry Concrete status can be activated and monitored by following procedure. 

 
1  Press SERVICE button for 5 seconds. 
2  Press ▲ to enter menu Sr: 03 and press SET button to activate Dry Concrete function. 
3  Press OFF/ON button to quit setting. 

1  This process should be done at Gemstar (and/or) PAPAMY as the last process after any inspection. 
2  This condition should be activated by pressing combination of few SW's for certain time as shown. 

 

 

These 3 SW's should press continuously for 5secs. 
(Operation should be OFF during this period) 
 
 
 
 
 
 
 
 

 

3  When this condition is activated, default data should be written in EEPROM. 
4  Once the default data is written in the EEPROM, the following full LCD display should be ON for 2secs for 

confirmation. After 2secs, it goes back to normal display. 
 

OPERATION

ACTUAL

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In order to ensure optimal performance of the unit, seasonal inspections on the unit, external filter and field wiring 
have to be carried out at regular intervals. This maintenance should be carried out by authorized dealer. 
 

1.  Water pressure 

Water pressure should not lower than 0.05 MPa (with inspects the pressure gauge). If necessary add tap 
water into tank unit. Refer to boiler tank installation instruction for details on how to add water. 

2.  Pressure relief valve 

o

  Take out the cover   with remove the mounting screw for access to the pressure relief valve. 

o

  Check for correction operation of pressure relief valve by turn up the lever to become horizontal. 

(Refer to figure of “Pressure relief valve”) 

o

  If you do not hear a clacking sound (due to water drainage), contact your local authorized dealer. 

o

  Turn down the lever after checking finish. 

o

  In case the water keeps drained out from the unit, switch off the system, and then contact your local 

authorized dealer. 

o

  Reinstall the cover   with tighten the mounting screws properly, if the pressure relief valve is functioning 

normal. 

 

13

Mounting

screws

Pressure

relief valve

Lever

Turn up

Pressure relief valve

 

 

3.  Air purge valve 

Air purge valve must be installed at all high points in a closed water circuit system. 
An automatic air purge valve is provided inside the indoor unit. To automatically purge the air from the 
system, turn the plug on the air outlet anticlockwise by one complete turn from fully closed position. 
Excessive air is automatically purged if the plug is kept in this position. 

 

Plug (turn
anticlockwise

by one

complete

turn)

Air purge valve

 

 

4.  Indoor unit control board area 

Thorough visual inspection of the control board and look for defects, i.e. loose connection, melting of wire 
insulator and etc. 

5.  RCCB/ELCB 

Ensure the RCCB/ELCB set to “ON” condition before check RCCB/ELCB. 
Turn on the power supply to the indoor unit. 
This testing could only be done when power is supplied to the Mono bloc unit.  

 
 
 

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Be careful not to touch parts other than RCCB/ELCB test button when the power is supplied to Indoor Unit. Else, electrical shock 
may happen. 

 

o

 

Push the “TEST” button on the RCCB/ELCB. The lever would turn down and indicate “0” and indicate 
green colour if it functions normal. 

o

 

Contact authorized dealer if the RCCB/ELCB malfunction. 

o

 

Turn off the power supply to the Mono bloc unit. 

o

 

If RCCB/ELCB functions normal, set the lever to “ON” again after testing finish. 

 

6.  Reset overload protector 

Overload protector serves the safety purpose to prevent the water over heating. When the overload protector 
trip at high water temperature, take below steps to reset it. 
a. Take out OLP cover. 
b. Use a test pen to push the centre button gently in order to reset the Overload protector. 

c. Fix the OLP Cover to the original fixing condition. 

 

How to reset Overload protector

Use test pen to
push this button
for reset Overload
protector.

 

 

7.  External water filter (field supply) 

Clean the external water filter in regularly basic. 
o

  External water filter is located inside the tube connector which is before water inlet connector of Mono 

bloc unit (indicated with “WATER IN”). (Refer to figure below) 

o

  Use spanner to detach the tube connector nut. 

o

  Take out the filter carefully so that not deforms it shape. 

o

  Use tap water only to wash the residue on the filter. If necessary, gently use soft brush only to clean the 

hard dirt. 

o

  After clean, put it back to the original location and tighten the nut connection with torque wrench. 

 

Location Of External Water Filter

Water Outlet

Water Inlet

Water Inlet

Connector

External
Water Filter

Nut

 

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In order to diagnose malfunctions, make sure that 
there are no electrical problems before inspecting the 
refrigeration cycle. Such problems include insufficient 
insulation, problem with the power source, malfunction 
of a compressor and a fan. The normal pressure of 
the refrigeration cycle depends on various conditions, 
the standard values for them are shown in the table on 
the right.