Crestron CHV-TSTATEX Przewodnik Instalacji Pobierz pdf (Strona 83)

Crestron CHV-TSTAT and CHV-THSTAT Thermostats

Operations and Installation Guide – DOC. 8163E Thermostats: CHV-TSTAT and CHV-THSTAT

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Local Error Messages

When a critical sensor fails and prevents the safe or intended operation of the HVAC

equipment, an error message flashes on the main screen.

This error message appears as a text message under the line that normally reads ON

LINE and VIEW MSG. The thermostat messages are shown as follows in

descending priority.

ERROR DESCRIPTION

ERR! NO AT SRC Indicates that no air temperature source is present,

because all available sensors designated USE have

generated errors during the current read cycle. HVAC

operation is suspended and relays are cleared, except on

SLAB1 type. SLAB1 type cannot generate this error

because it does not have an air temperature USE type.

ERR! NO SB SRC Indicates that no slab temperature source is present,

because all available sensors designated SLAB have

generated errors during the current read cycle. HVAC

operation is suspended on all slab modes (1, 2, 3, 4A,

4B, 5A, 5B).

ERR! NO HM SRC Indicates that no humidity sources are present, because

all available sensors designated USE have generated

errors during the current read cycle. Humidifier operation

is suspended and HUM relay is cleared.

ERR! NO OD SRC Indicates that no outdoor source is present and the setup

says at least one remote is supposed to be providing OD

data (designated OD). This error does not disable HVAC

operation because it is not absolutely essential. All

heatpump modes that use outdoor temperature for

balance point operation eventually stage or switch to

auxiliary heat and thus prevent the space from freezing.

NOTE: All of these conditions are self-healing if the sensor begins sending valid

data.

Check Network Wiring

Use the Right Wire

In order to ensure optimum performance over the full range of the installation

topology, use Crestron Certified Wire only. Failure to do so may incur additional

charges if support is required to identify performance deficiencies because of using

improper wire.

Calculate Power

CAUTION: Use only Crestron power supplies for Crestron equipment. Failure to

do so could cause equipment damage or void the Crestron warranty.

CAUTION: Provide sufficient power to the system. Insufficient power can lead to

unpredictable results or damage to the equipment. Use the Crestron Power

Calculator to help calculate how much power is needed for the system

(www.crestron.com/calculators

When calculating the length of wire for a particular Cresnet run, the wire gauge and

the Cresnet power usage of each network unit to be connected must be taken into

consideration. Use Crestron Certified Wire only. If Cresnet units are to be daisy

chained on the run, the Cresnet power usage of each network unit to be daisy

1 2 ... 78 79 80 81 82 83 84 85 86 87 88 ... 91 92

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