Mitsubishi Electric EHGT17D-YM9ED Service Manual page 75

SW2 setting
Liquid pipe temperature (TH2)
−39 to 88
ON
1 2 3 4 5 6
Indoor ambient temperature (TH1)
8 to 39
ON
1 2 3 4 5 6
Target flow water temperature
0 to 100
ON
1 2 3 4 5 6
Outside temperature (TH7)
ON
−39 to 88
1 2 3 4 5 6
Heat pump unit heat sink temperature
(TH8)
ON
−40 to 200
1 2 3 4 5 6
Discharge superheat SHd
0 to 255
ON
Heating = TH4−T
1 2 3 4 5 6
Input current of heat pump unit
ON
1 2 3 4 5 6
Secondary LEV opening pulse 0 to 500
ON
Heating: LEV-A
1 2 3 4 5 6
U9 error detail history (latest)
ON
1 2 3 4 5 6
DC bus voltage
ON
180 to 370
1 2 3 4 5 6
Error postponement code history (2)
ON
of heat pump unit
1 2 3 4 5 6
OCH722A
Display detail
63HS
75
The black square (
Explanation for display
−39 to 88
(When the temperature is 0: or less, "–" and
temperature are displayed by turns.)
8 to 39
0 to 100
−39 to 88
(When the temperature is 0: or less, "–" and
temperature are displayed by turns.)
−40 to 200
(When the temperature is 0: or less, "–" and
temperature are displayed by turns.)
(When the thermistor detects 100: or more,
hundreds digit, tens digit and ones digit are
displayed by turns.)
0 to 255
(When the temperature is 100°C or more, hundreds
digit, tens digit and ones digit are displayed by
turns.)
0 to 500
(When it is 100 or more, hundreds digit, tens digit
and ones digit are displayed by turns.)
0 to 500
(When it is 100 pulse or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
Description
Normal
Overvoltage error
Undervoltage error
Input current sensor error
L -phase open error
1
Abnormal power synchronous signal
PFC/IGBT error (SW-V, SHW-V)
Undervoltage
Display examples for multiple errors:
•
Overvoltage (01) + Undervoltage (02) = 03
Undervoltage (02) + Power-sync signal error (08) = 0A
L phase open error (04) + PFC/IGBT error (20) = 24
1
180 to 370
(When it is 100 V or more, hundreds digit, tens
digit and ones digit are displayed by turns.)
Postponement code display
Blinking: During postponement
Lighting: Cancellation of postponement
"00" is displayed in case of no postponement.
■
) indicates a switch position.
Unit
:
:
:
:
:
:
0.1 A
Pulse
Display
00
01
02
04
Code
08
display
20
V
Code
display