Toyotomi CFT 35 INV-Ri Service Manual page 95

TLC-I-2011.1
5. Main protective functions:
5.1. 1 3-minute delay for the compressor start-up.
When first time powering on or after the stop of compressor, 3-minute delay will be needed to start the
compressor.
When switch over between cooling/heating mode, the compressor stops automatically.
5.1.2 Evaporator protection against high temperature (heating mode)
Only available for heating mode, including auto heating mode.
Note: During protection, the indoor fan continues operating at a setting speed, while the anti-cold
air function of heating and the compressor will be 3 minute delayed to shut down for protection.
5.1.3 Evaporator Protection against low temperature (cooling mode)
5.1.3.1 When the evaporator pipe temperature ≤ 2° c and this lasts for 3 minutes, the compressor and
outdoor fan will be shut off.
5.1.3.2 When the evaporator pipe temperature ≥ 7° c, it recovers.
5.1.3.3 The restart of the compressor shall execute the delay protection.
5.1.4 Anti-cold air protection
Only available in heating mode, including heating mode and heating operation under auto mode.
When the indoor temp. raises, if it is lower than 28 , the indoor fan stops; if it is between 28-32 , the
indoor fan will run with low speed; and if it is higher than 32 , the indoor fan will run with the setting
speed. When the indoor temp. drops, if it is lower than 15
15-30 , the indoor fan will run with low speed; and if it is higher than 30 , the indoor fan will run with
the setting speed.
5.1.5 Condenser high temperature protection
5.1.6.1 Only available to cooling (incl. cooling mode, cooling operation under auto mode) and
dehumidifying mode.
5.1.6.2 Delay protection should be performed when the compressor restarts.
5.1.6 Outdoor protection
When outdoor protection happen, system will stop running and LED display corresponding contents.
5.1.7 Power supply electricity sequence protection
1. For 1 phase unit it owns a starting circuit. 1 second before startup, capacitor is switched on and
then broken.
2. For 3 phase unit it must have the phase sequence and lacking of phase checking and protecting
function. Etc.
6. System precision
1) Temperature sampling precision: ±1
2) Current sampling precision: ±1.5 amps
3) Timing sampling precision: ±1min/hour
4) Swing angle sampling precision: 0.7 degree
7. Point Check
There's a point-check button in the outdoor PCB it cooperates with LED in the outdoor PCB to show the
status of the outdoor unit. Each time the button is pressed, the data shown in the LED is different. The details
are shown in the following:
0, Normal display
1, Running mode: 0---Stand by;2---Cooling;3---Heating;4---Forced cooling;
2, Running fan speed: 0---Turn off; 1---Low speed; 2---High speed;
3, Capacity demand
4, T3- Outdoor pipe temp. (Actual value)
5, TP-Discharge temp.(Actual value, if it is over 100,only display hundreds digit and tens digit)
6, T4-Ambient temp.(Actual value)
7, Current of compressor
8, Outdoor PMV opening degree
9, The last error or protection code (Display 00 if no error)
10, AD value of volt
the indoor fan stops; if it is between
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