Heat Operation - Mitsubishi Electric CITY MULTI PVFY-P12NAMU-E Technical & Service Manual

R410a
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[ VII Microprocessor Control ]

3. Heat operation

.
1. Termoregulating function
(1) Thermoregulating function (Function to prevent restarting for 3 minutes)
When indoor units are connected to the PUHY/PURY/PQHY/PQRY series of outdoor units.
Room temperature
desired temperature -0.9°F ···Thermo ON
Room temperature
desired temperature +0.9°F ···Thermo OFF
When indoor units are connected to the PUMY series of outdoor units.
Room temperature
desired temperature -1.8°F ···Thermo ON
Room temperature
desired temperature ···Thermo OFF
2. Fan
(1) By the remote controller setting (switch of 3 speeds+Auto)
Type
3 speeds + Auto type
When [Auto] is set, fan speed is changed depending on the value of:
Desired temperature - Room temperature
Give priority to under-mentioned controlled mode
1) Hot adjust mode
2) Preheating exclusion mode
3) Thermo OFF mode (When the compressor off by the thermoregulating)
4) Cool air prevention mode (Defrosting mode)
5) Capacity increasing mode
(2) Hot adjust mode
The fan controller becomes the hot adjuster mode for the following conditions.
1) When starting the HEAT operation
2) When the thermoregulating function changes from OFF to ON.
3) When release the HEAT defrosting operation
Hot adjust mode
[Extra Low]
A
A: Hot adjust mode starts.
B: 5 minutes have passed since the condition A or the indoor liquid pipe temperature turned 95°F or more.
C: 2 minutes have passed since the condition A. (Terminating the hot adjust mode)
*1 The fan may stop, depending on the operation status of the indoor units or on the unit settings.
HWE1405A
1. Press POWER
2. Press the operation
3. Press the
Set fan speed by the remote controller
[Low]
*1
B
C
<How to operate>
button.
ON/OFF
MODE
button to set the desired temperature.
TEMP.
The set temperature changes 2°F when the
pressed one time. Heating 63 to 83°F.
Fan speed notch
[Low], [Med], [High], [Auto]
- 14 -
button to display HEAT.
button is
TEMP.
GB

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