Mitsubishi HMA100V Technical Manual page 298

Troubleshooting
Indicator lamp
Off
1 × short + 1 × long
3 × short + 1 × long
5 × short + 1 × long
* The pump reduces the voltage automatically (the speed) at 105 °C, to stop completely at 125 °C. When the pump has cooled to 115 °C
again, it restarts automatically.
Other faults:
Problem
Noise from pump.
Technical specifications
Circulation pump
<HMA100V, HMA100VM>
Max pressure height
Max volume flow
Min/max temperature
Max system pressure
Connection
Length
Voltage
Frequency
Output
* Not frozen or condensed
bar
0.6
0.5
0.4
0.3
0.2
0.1
0
0 200 400 600 800 1000 1200 1400 1600 1800 2000
Flow ℓ/h
Cause
The pump is not connected or is incorrectly
connected.
Low voltage.
Temperature too high.
Pump blocked.
Cause
Air in the system.
Dirt in the pump.
Worn bearings.
6 m
3000ℓ/h
-10 °C* to +95 °C
6 bar
G1" Accessories
130 mm
200-240 V
50/60 Hz
9–80 W
Action
- Check the connection.
- Power failure. Check power supply and fuses.
- Check supply voltage.
- The pump restarts automatically.*
- Check max. system temperature.
- Open and clean the pump.
Action
- Vent the system.
- Open and clean the pump.
- Replace the pump.
<HMS140V>
Max pressure height
Max volume flow
Min/max temperature
Max system pressure
Connection
Length
Voltage
Frequency
Output
* Not frozen or condensed
bar
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0 500 1000
- 206 -
'10 • HM-T-149A
Components
Indoor unit
7 m
3500ℓ/h
-10 °C* to +60 °C
6 bar
G1" Accessories
130 mm
200-240 V
50/60 Hz
9–110 W
1500 2000 2500 3000
Flow ℓ/h
3500
70