Testing Definition
Testing Method
3-Way Motorized Valve
Voltage and Mode Control
(Tap Water Heating)
Turn on the tap water when the power on the boiler is on. Measure
the voltage between B-C on the motorized valve connector in the tap
water heating mode. Check whether the voltage is in the range of 215-
240 V AC. Motorized valve pin must be at the back.
3 BAR SAFETY VALVE
Subject
Description
Part Function
When water pressure in the central heating system reaches to 3
bars, it opens the discharge end for discharging excess water out.
Impact in Case of Faulty
Operation
1- Low pressure error due to over-discharge of water
2- High pressure error due to no discharge of water
3- Risk of leakage occurrence in plumbing where user continues to
fill water after high pressure error
Primary Relevant Error
Codes
F37,F40
Troubleshooting and
Testing Method
1- Checking whether the end of safety valve is water-tıght when
water pressure in the central heating circuit is in the range of 0.8-2.5
bars
2- Opening Pressure Testing
Maintenance Requirement
No special maintenance requirement
Maintenance Period
-
Testing Definition
Testing Method
Safety Valve On-Off
Prssure Testing
Open the supply tap and fill water into the central heating system. In
the range of 2.7-3.3 bars, safety valve opens its drain due to high
water pressure; discharge must continue until water pressure drops
to the range of 2.5-2.7 bars.
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