Indoor Service Manual
Table Of Contents
- Cover
- Contents
- 1. SAFETY PRECAUTION
- 2. PART NAMES AND FUNCTIONS
- 3. SPECIFICATION
- 4. FAN PERFORMANCE AND CORRECTED AIR FLOW
- 5. SOUND PRESSURE LEVELS
- 6. OUTLINES & DIMENSIONS
- 7. WIRING DIAGRAM
- 8. REFRIGERANT SYSTEM DIAGRAM
- 9. HEATER CONTROL
- 10. HUMIDIFIER CONTROL
- 11. ERV (ENERGY RECOVERY VENTILATION) CONTROL
- 12. TROUBLESHOOTING
- 12-1. Cautions on troubleshooting
- 12-2. Self-check function
- 12-3. Self-diagnosis action table
- 12-4. Troubleshooting by inferior phenomena
- 12-5. Test point diagram
- 12-6. Trouble criterion of main parts
- 12-7. Thermistor
- 12-8. DC Fan motor (FAN MOTOR/INDOOR CONTROLLER BOARD)
- 12-9. Functions of dip switch and jumper wire
- 13. DISASSEMBLY PROCEDURE
- Back Cover
Specications are subject to change without notice. © 2016 Mitsubishi Electric US, Inc.
22
• Table 3 shows how the time delay is selected
Table. 3 [Time Delay Selection Table]
Request Code
*1
Action
*3
390 Monitor Time Delay Setting
391 Set Time Delay to 14 minutes
392 Set Time Delay to 19 minutes
393 Set Time Delay to 24 minutes
*2
394 Set Time Delay to 29 minutes
*1
Time delay can only be selected with MA controller. If use of a non-MA controller is desired, the time delay must first be
selected with the MA controller. Then the non-MA controller can be attached and used.
*2
The default time delay setting is 24 minutes.
*3
All delay times are approximate.
• Chart 1 and Table 4 show an example of heater operation.
Chart 1 [Heater Operation Example]
EH2
ON
OFF
T
o
- 0.9 °F [0.5 °C]
T
o
- 2.7 °F [1.5 °C]
ON
OFF
EH1
T
o
T
RA
X min X min X min
①
②
③
④
⑤
⑥
①
②
③
> 7
min
Table. 4 [Heater Operation Example]
Step Condition Result
(To -T
RA
) > 2.7 °F [1.5 °C] AND T
RA
has not increased by 0.9 °F [0.5°C] in X min EH1 ON
(To -T
RA
) < 2.7 °F [1.5 °C] AND T
RA
increasing faster than 0.9 °F [0.5°C] in 7 min EH2 not ON
(To -T
RA
) < 0.9 °F [0.5°C] EH1 OFF
(To -T
RA
) > 2.7 °F [1.5 °C] AND T
RA
has not increased by 0.9 °F [0.5°C] in X min EH1 ON
(To -T
RA
) > 2.7 °F [1.5 °C] AND T
RA
not increasing faster than 0.9 °F [0.5°C] in 7 min EH2 ON
(To -T
RA
) < 0.9 °F [0.5°C]
EH1 OFF
EH2 OFF
EH2
ON
OFF
T
o
- 0.9 °F [0.5 °C]
T
o
- 2.7 °F [1.5 °C]
ON
OFF
EH1
T
o
T
RA
X min
X min X min
①
②
③
④
⑤
⑥
①
②
③
EH2
ON
OFF
T
o
- 0.9 °F [0.5 °C]
T
o
- 2.7 °F [1.5 °C]
ON
OFF
EH1
T
o
T
RA
X min
X min X min
①
②
③
④
⑤
⑥
①
②
③
EH2
ON
OFF
T
o
- 0.9 °F [0.5 °C]
T
o
- 2.7 °F [1.5 °C]
ON
OFF
EH1
T
o
T
RA
X min X min
X min
①
②
③
④
⑤
⑥
①
②
③
EH2
ON
OFF
T
o
- 0.9 °F [0.5 °C]
T
o
- 2.7 °F [1.5 °C]
ON
OFF
EH1
T
o
T
RA
X min
X min
X min
①
②
③
④
⑤
⑥
①
②
③
EH2
ON
OFF
T
o
- 0.9 °F [0.5 °C]
T
o
- 2.7 °F [1.5 °C]
ON
OFF
EH1
T
o
T
RA
X min
X min
X min
①
②
③
④
⑤
⑥
①
②
③
EH2
ON
OFF
T
o
- 0.9 °F [0.5 °C]
T
o
- 2.7 °F [1.5 °C]
ON
OFF
EH1
T
o
T
RA
X min
X min
X min
①
②
③
④
⑤
⑥
①
②
③