11.4.2
Activate MANUAL TEST
1.
Ensure that the main circuit breaker is on.
2.
Select operating mode , in the menu INFORMATION -> OPERAT.->
3.
Open the SERVICE menu by pressing and holding < in for five seconds.
4.
Set the value for MANUAL TEST to 2.
Note! Set MANUAL TEST to 2 to navigate away from the menu during ongoing test operation.
11.4.3
Test the circulation pump
1.
Start the heating system circulation pump by setting a value between 30% and 100%. (1 at constant speed
circulation pump).
2.
Check that the circulation pump is running by carrying out the following:
•
Listen
•
Place a hand on the pump
•
Listen for air
3.
If there is air in the heating system, bleed, see Filling and bleeding the water heater and heating system.
4.
When using a speed controlled circulation pump it is important to check which speed gives sufficient flow
in the system. Sufficient flow is indicated by an "F" in the main part of the display. Increase the speed of the
circulation pump until safe flow is achieved. Read off the value in %. This value (described as a control cur-
rent in Volts, for example 60% = 6V) is then used in SERVICE -> OPTIMUM -> START FLOW CIRC. For circula-
tion pump with constant speed the pump setting is checked in the same way.
5.
Stop the circulation pump by setting the CIRC. PUMP value to 0.
11.4.4
Test exchange valve for hot water (if installed)
1.
Activate the reversing valve by setting the value REV.V. HOT WATER to 1.
2.
Check that the indicator on the exchange valve's upper side changes position.
11.4.5
Test the compressor
1.
Start the circulation pump by setting the value CIRC.PUMP to 1.
2.
Start the compressor by setting the value COMPRESSOR to 1.
3.
Check that there are no strange noises.
4.
If it sounds abnormal refer to the Service instructions.
5.
Stop the compressor by setting the COMPRESSOR value to 0.
6.
Stop the circulation pump by setting the CIRC. PUMP value to 0.
11.4.6
Test the auxiliary heater
1.
Start the circulation pump by setting the value CIRC.PUMP to 1.
2.
Start the auxiliary heater by setting the value of present AUX. HEAT to 1.
3.
Check that the auxiliary heater works by exiting the MANUAL TEST menu. Enter the INFORMATION -> OP.
DATA menu and check that the temperature of SUPPLY LINE rises.
4.
Return to the menu MANUAL TEST and stop the auxiliary heater by setting AUX. HEATER value to 0.
5.
Stop the circulation pump by setting the CIRC. PUMP value to 0.
11.4.7
Test the fan
1.
Start the fan by setting the value FAN to between 0 - 10V. Check whether that the fan is running.
2.
Stop the fan by setting the FAN value to 0.
68 – Installation instructions VMGFD102
