DriSteem Vapor-Logic Installationsanleitung PDF herunterladen (Seite 41)

POSSIBLE CAUSE RECOMMENDED ACTION

Internal program changed (VAPOR-LOGIC detected

a change from its previous program check )

Consult DRI-STEEM, for re-programming instructions

Incorrect placement of control boards, resulting in a

switch of master and control boards (The system can

only have a single "Master.")

Verify that the boards are placed correctly in the system.

Open, shorted, or incorrect wiring of transmitter or

humidistat.

Check D.C. supply voltage terminals: 5+, 7- (21 VDC)

Signal by others. Incorrect, out of range, or miswired. If there is no output 4-20 mA, replace.

Recalibrate if there is a calibration error:

Normal Range 4-20 mA = 0-100% RH

12 mA = 50% RH (Refer to Trim Adjustment on page

22 for further information.)

Measure for normal 1-5 VDC range on Control RH

transmitter or 4-20 mA by others: 6+, 7-.

Measure for normal 1-5 VDC range on Duct High Limit

transmitter: 9+, 10-.

Measure 1-15 VDC: 6+, 7- signal by others.

Measure 0-135 ohms, resistance: 6+, 7- signal

by others.

Improperly located Transmitter must be on inside window glass only.

(See page 5 for correct placement.)

Incorrect transmitter wiring Check D.C. supply voltage terminals 11+, 13-

(21 VDC)

Temperature transmitter -29°-71°C should have

12 mA = 21°C part no. 405889.

Refer to Trim Adjustment on page 8 for further

information.

Modular cable disconnected Connect modular cables.

Reversed polarity of modular cable connection to cable

plugs

See page 11 for correct polarity of the modular cable

connection to cable plugs.

Deterioration of probe rod assembly Replace probe rod assembly.

Key pad not configured as a remote See page 19.

Electrical interference induced into key pad

Control signal by others has exceeded the range limits.

High voltage interference. Check routing of modulation

cable.

Correct control signal 4-20 mA, 0-135 ohms, 1-10 VDC.

Remove key pad from within control cabinet.

Noise spike induced into VAPOR-LOGIC board, check

grounding of system, cabinet, humidifier, sensors

FAULT INDICATOR CODES

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 51 52

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